{"title":"Anniversary gifts","description":"\u003cp\u003eThere is a real chemistry to attachment: oxytocin, dopamine, serotonin, the molecules that do the quiet work of bonding. This set leans on them, alongside the interlocked DNA strands and the anatomical heart, for marking time with someone.\u003cbr\u003e\u003cbr\u003eEach piece is accurate to the structure it draws, in necklaces, rings, and earrings, sterling silver or 18K gold vermeil. It says what an anniversary means without resorting to a cliché, which tends to matter more to the kind of person who reads the paper before the card.\u003cbr\u003e\u003cbr\u003eThese are some of our most-loved pieces for this. There's much more in the \u003ca href=\"\/collections\/molecules\"\u003efull molecule collection\u003c\/a\u003e if you'd like to keep looking.\u003c\/p\u003e","products":[{"product_id":"interlocked-dna","title":"interlocked DNA necklace | silver","description":"\u003ch2\u003eInterlocked DNA necklace | silver\u003c\/h2\u003e\n\u003cp\u003eTwo helices in physical contact, rendered at 36 mm. The interlocked geometry references something that happens inside cells every time they divide: DNA molecules linking, threading, and unlinking through one another. The structure is compact, but the topology it captures is at the centre of how cells solve replication.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Interlocked DNA\u003c\/h2\u003e\n\u003cp\u003eAfter bacterial DNA replication, the two daughter chromosomes are physically interlinked, a state called catenation, and must be separated before the cell divides. Topoisomerase IV solves the problem by passing one DNA duplex through a transient double-strand break in the other, then re-sealing the break. In human cells the equivalent role during mitosis falls to topoisomerase II. Drugs that inhibit topoisomerase II, including doxorubicin and etoposide, work by trapping the enzyme mid-cleavage, leaving lethal DNA breaks in dividing cells. The interlocked geometry on this pendant is not a stylistic choice. It is the topology that several widely used cancer chemotherapies target.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cp\u003eMolecular biologists, biochemists, and oncology researchers who work with DNA topology, topoisomerase enzymes, or DNA-targeted chemotherapy.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists working on DNA replication or recombination\u003c\/li\u003e\n\u003cli\u003eoncology researchers and clinical pharmacologists\u003c\/li\u003e\n\u003cli\u003estructural biologists studying topoisomerase mechanism\u003c\/li\u003e\n\u003cli\u003egraduate students who have spent a semester thinking in three dimensions about DNA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOften given to colleagues finishing a PhD on chromosome dynamics or to a researcher transitioning from bench science into a clinical oncology role.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/interlocked-dna-18k-gold-plated\"\u003eInterlocked DNA necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna\"\u003eDNA necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/crossed-dna-ring\"\u003eCrossed DNA ring | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/circular-dna\"\u003eCircular DNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/metaphase\"\u003eMitosis necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy does the interlocked geometry matter scientifically?\u003c\/h3\u003e\n\u003cp\u003eIt captures the moment two DNA molecules are physically linked through one another. That topology occurs routinely after DNA replication and during recombination, and it is the structural problem that topoisomerase enzymes evolved to solve.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWho reaches for this rather than a single helix?\u003c\/h3\u003e\n\u003cp\u003eResearchers who think about DNA as a topological object: people working on chromosome biology, replication forks, recombination, or topoisomerase-targeted chemotherapy. The single helix is the molecule. The interlocked piece is the mechanism.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat are the specs and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, 36 mm pendant, 45 cm chain with a 5 cm extender. Nickel-free and hypoallergenic. Ships free worldwide via DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this available in gold?\u003c\/h3\u003e\n\u003cp\u003eYes. The same 36 mm interlocked DNA pendant is available in 18K gold vermeil at the same size and chain length. Identical structure, different finish.\u003c\/p\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":26500526087,"sku":"NK0188-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/interlocked-dna-necklace-silver-necklaces-science-jewelry-sciencejewelry1824-51379756007772.png?v=1699022592"},{"product_id":"serotonin-polished-silver","title":"serotonin ring | silver","description":"\u003ch2\u003eserotonin ring | sterling silver\u003c\/h2\u003e\n\u003cp\u003eSerotonin is the molecule that changes how the brain responds to sensation and salience. Most serotonin is in the gut, regulating motility and secretion. But brainstem raphe nuclei produce serotonin that modulates mood, anxiety, reward processing, and the binding site where classical psychedelics and their derivatives attach. This ring in high-polish sterling silver carries that complexity.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Serotonin\u003c\/h2\u003e\n\u003cp\u003eSerotonin (5-hydroxytryptamine) is an indoleamine neurotransmitter synthesised from the amino acid tryptophan. Approximately 90 percent of the body's serotonin is made by enterochromaffin cells in the gut, where it regulates motility. Brain serotonin is produced by neurons in the raphe nuclei and modulates mood, anxiety, sleep, and reward. SSRIs (fluoxetine, sertraline) inhibit serotonin reuptake and are used for depression and anxiety disorders. Classical psychedelics and their derivatives bind the 5-HT2A receptor, which is why these molecules alter perception and mood. Serotonin's role is modulatory and context-dependent, calibrated signalling rather than simply more-is-better biology.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Will Recognise It\u003c\/h2\u003e\n\u003cp\u003eFor psychiatrists, pharmacists, neuroscientists, and anyone who understands that the relationship between neurotransmitters and wellbeing is a careful balance.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003epsychiatrists and emergency physicians\u003c\/li\u003e\n\u003cli\u003eclinical pharmacists and neuroscientists\u003c\/li\u003e\n\u003cli\u003eresearchers studying serotonin, mood, or perception\u003c\/li\u003e\n\u003cli\u003eanyone who wants to wear a molecule that teaches about calibration and balance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-vertical\"\u003eSerotonin necklace in sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-polished-silver\"\u003eDopamine ring in sterling silver (polished)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/fluoxetine\"\u003eFluoxetine necklace in sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/psilocybin\"\u003ePsilocybin necklace in sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat makes the polished finish special?\u003c\/h3\u003e\n\u003cp\u003eThe high-polish finish creates a mirror-like surface that amplifies light reflection, making the molecular structure appear luminous. This finish emphasises the three-dimensionality of the serotonin molecule and catches light continuously throughout the day.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy does serotonin matter in psychiatry?\u003c\/h3\u003e\n\u003cp\u003eSerotonin's role in mood, anxiety, and perception makes it central to psychiatry. SSRIs work by increasing serotonin availability. But serotonin is also the binding site for classical psychedelics, opening new therapeutic possibilities for treatment-resistant depression and anxiety. The molecule itself is the intersection of these questions.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat sizes and material are available?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, high-polish finish, nickel-free and hypoallergenic. Available in US ring sizes 5, 6, 7, 8, 9. Select your size at checkout. Ships free worldwide via DHL Express in 1-5 business days. Comes in a ready-to-gift jewelry box with the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eHow do I find my ring size?\u003c\/h3\u003e\n\u003cp\u003eUS 7 is the typical middle size for most adult hands. US 9 is common for men, US 5-6 for smaller frames. If uncertain, wrap a strip of paper around the finger and measure in millimetres, then convert to ring size. The 30-day return policy covers exchanges if the fit is off.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545553449346,"sku":"RG0029-S-5","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56548236099970,"sku":"RG0029-S-6","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56548236132738,"sku":"RG0029-S-7","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56548236165506,"sku":"RG0029-S-8","price":150.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56548236198274,"sku":"RG0029-S-9","price":150.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/serotonin-ring-silver-rings-science-jewelry-sciencejewelry1824-51402547200348.png?v=1699273149"},{"product_id":"dopamine-serotonin-polished-silver","title":"dopamine - serotonin ring | silver","description":"\u003ch2\u003eDopamine serotonin ring | sterling silver\u003c\/h2\u003e\n\u003cp\u003eDopamine and serotonin are the two molecules that hold most of psychiatric pharmacology between them. The ring is the seventh format in the dopamine-serotonin family, and the only one that keeps the molecules at hand-distance rather than chest-height. Worn here as a sterling silver ring in US sizes 5 to 9.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Dopamine and Serotonin\u003c\/h2\u003e\n\u003cp\u003eDopamine is synthesised in the substantia nigra and ventral tegmental area, with the nigrostriatal pathway controlling movement and the mesolimbic pathway encoding reward and motivation. L-DOPA replaces what is lost in Parkinson's disease. Serotonin (5-hydroxytryptamine) is synthesised mostly in the raphe nuclei in the brainstem, projecting widely across cortex and limbic structures, and modulates mood, sleep, satiety, and impulse control. Selective serotonin reuptake inhibitors are the most-prescribed class of antidepressants. The two systems balance against each other across a wide range of psychiatric and neurological conditions, which is why most psychotropic pharmacology targets one or both. Atypical antipsychotics, SNRIs, and bupropion all act somewhere on this two-molecule axis.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Will Recognise It\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003epsychiatrists, clinical psychologists, and psychotherapists working with monoamine pharmacology\u003c\/li\u003e\n\u003cli\u003eneuropharmacologists and translational neuroscience researchers\u003c\/li\u003e\n\u003cli\u003emedical and nursing students learning the SSRI and atypical-antipsychotic classes\u003c\/li\u003e\n\u003cli\u003ebuyers who already own one of the six DS pendants and want a seventh format at hand-distance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who wants the molecules visible during ordinary daily use rather than across a room, and who finds the ring scale a useful complement to a chest pendant.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003eDopamine serotonin necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-1\"\u003eDopamine serotonin necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003eDopamine serotonin necklace H | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-earring-hoops\"\u003eDopamine serotonin earring hoops | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-silver-gold\"\u003eDopamine serotonin necklace H | silver and gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy a ring rather than the pendant?\u003c\/h3\u003e\n\u003cp\u003eThe ring keeps the molecules at hand-distance, where the wearer sees them during ordinary daily use. Pendants for biological molecules work in their own register, sitting at chest height where they are seen but rarely focal. Many buyers who already own one of the six dopamine-serotonin pendants pick up the ring as a seventh format that does not interact with collars or stethoscopes. Working clinicians who want a quieter signal than a chest pendant tend to start with the ring.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre dopamine and serotonin really the right pair to wear together?\u003c\/h3\u003e\n\u003cp\u003eFor most of practical psychiatry, yes. Atypical antipsychotics modulate D2 and 5-HT2A. SNRIs and bupropion target the dopamine-serotonin axis. Even the SSRI class, which looks pure on paper, has indirect effects on dopaminergic tone via serotonin's modulatory role. Pairing the two molecules captures more of the pharmacology than either one alone, which is why the dopamine-serotonin design exists as a seven-format family across pendants, earrings, and now a ring.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat sizes are available and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, available in US ring sizes 5, 6, 7, 8, and 9. Nickel-free and hypoallergenic, no chain. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat other formats of the dopamine-serotonin design exist?\u003c\/h3\u003e\n\u003cp\u003eSix other formats. The interlocked pendants come as \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003esilver V\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-1\"\u003esilver H\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003egold H\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated-1\"\u003egold V\u003c\/a\u003e, and \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-silver-gold\"\u003esilver and gold bicolour H\u003c\/a\u003e, all 40 mm. The \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-earring-hoops\"\u003eearring hoops\u003c\/a\u003e are the conversation-distance format. The full set covers daily wear, statement-piece occasions, and milestones.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545553219970,"sku":"RG0011-S-5","price":155.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56545553252738,"sku":"RG0011-S-6","price":155.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56545553285506,"sku":"RG0011-S-7","price":155.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56545553318274,"sku":"RG0011-S-8","price":155.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56545553351042,"sku":"RG0011-S-9","price":155.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/dopamine-serotonin-ring-silver-rings-science-jewelry-sciencejewelry1824-51356900098396.png?v=1698823871"},{"product_id":"serotonin-vertical","title":"serotonin necklace V | silver","description":"\u003ch2\u003eSerotonin necklace V | sterling silver\u003c\/h2\u003e\n\u003cp\u003eSerotonin's receptor, 5-HT2A, is where the classical psychedelics bind. LSD, psilocin, mescaline all work through this single molecular target. The realisation that compounds with such different molecular structures share one binding site reshaped how neuroscience thinks about consciousness, perception, and the pharmacology of psychiatric medicine.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Serotonin\u003c\/h2\u003e\n\u003cp\u003eSerotonin (5-hydroxytryptamine) is an indoleamine, synthesised from tryptophan in the brain and gut. The 5-HT2A receptor is a Gq-coupled G-protein coupled receptor expressed densely in layers II, III, and V of the cortex and in the prefrontal cortex. Classical psychedelics are agonists at 5-HT2A. Their mechanism is now well-established: they increase glutamatergic excitation in pyramidal neurons and disrupt the hierarchical predictive coding that normally filters sensory input. The result is unfiltered sensory experience, the perceptual hallmark of psychedelics. The same receptor is targeted by second-generation antipsychotics, which combine D2 antagonism with 5-HT2A antagonism, reducing extrapyramidal side effects. Serotonin's role in mood, sleep, appetite, and social behaviour implicates it in depression, anxiety, and autism spectrum conditions.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Will Recognise It\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eneuroscientists studying consciousness, perception, and the serotonergic system\u003c\/li\u003e\n\u003cli\u003epsychopharmacologists and 5-HT2A researchers\u003c\/li\u003e\n\u003cli\u003epsychiatrists in psychedelic-assisted therapy and research\u003c\/li\u003e\n\u003cli\u003eanyone interested in the neurobiology of perception and self-awareness\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRoughly 40% of orders come from neuroscience labs, another 40% from individuals in consciousness research or therapy training, and 20% from neuroscience students and self-directed learners.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Neuroscience Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-vertical-18k-gold-plated\"\u003eSerotonin necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-horizontal\"\u003eSerotonin necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-vertical\"\u003eDopamine necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-studs\"\u003eSerotonin studs | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this a gift for a neuroscientist?\u003c\/h3\u003e\n\u003cp\u003eYes. Serotonin is central to understanding mood, perception, consciousness, and the mechanisms of psychiatric drugs and psychedelics. Any neuroscientist studying the serotonergic system will recognise it immediately. The vertical orientation shows the molecule's polarity and receptor-binding geometry.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy does the vertical orientation matter for serotonin?\u003c\/h3\u003e\n\u003cp\u003eThe vertical view emphasises the indole ring's structural features and the amine and hydroxyl groups at the molecule's poles. This perspective highlights how serotonin binds to receptors. The amine is positioned to interact with the receptor binding pocket. This geometry is what makes it effective at 5-HT2A.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size, material, and chain are included?\u003c\/h3\u003e\n\u003cp\u003e25 mm pendant in 925 polished sterling silver, nickel-free and hypoallergenic. 45 cm sterling silver chain with 5 cm extender. Ships free worldwide via DHL Express in 1-5 business days. Comes ready-to-gift with the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a gold version at the same size?\u003c\/h3\u003e\n\u003cp\u003eYes. Serotonin vertical is available in 18k gold vermeil at 25 mm. Same molecule, same orientation, same neuroscience. Many neuroscientists pair the silver and gold versions or gift both to lab collaborators across different career stages.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":30808323975,"sku":"NK0328-S","price":140.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/serotonin-necklace-v-silver-necklaces-science-jewelry-sciencejewelry1824-51379670090076.png?v=1699021871"},{"product_id":"dna-earrings","title":"DNA earrings | silver","description":"\u003ch2\u003eDNA earrings | sterling silver\u003c\/h2\u003e\n\u003cp\u003eDNA earrings for molecular biologists, geneticists, biology students, and anyone who wants the double helix as a daily piece rather than a statement. The structure that stores every inheritable instruction in every living cell, scaled down to 20 mm and rendered in 925 sterling silver.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Science Behind DNA\u003c\/h2\u003e\n\u003cp\u003eDNA replication is remarkably accurate. The error rate of DNA polymerase itself is roughly one mistake per 100,000 base pairs. After proofreading by the polymerase and a second round of mismatch repair by dedicated repair enzymes, the final error rate drops to approximately one per billion base pairs per replication cycle. This fidelity is what makes multicellular life possible: the human genome contains about 3.2 billion base pairs, and any given cell divides thousands of times over a lifetime, so even small failures of repair would accumulate into chaos. The molecular machinery responsible for identifying and repairing mismatches was characterised by Tomas Lindahl, Paul Modrich, and Aziz Sancar, who shared the 2015 Nobel Prize in Chemistry for their work on DNA repair. The double helix on the pendant is the same structure those repair enzymes act on, every time a cell divides.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eA Meaningful Gift for Science Lovers\u003c\/h2\u003e\n\u003cp\u003eFor the people who recognise an accurate helix on sight.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists, geneticists, and biochemists\u003c\/li\u003e\n\u003cli\u003egenetics and biology students through their first dissection of the central dogma\u003c\/li\u003e\n\u003cli\u003escience teachers, communicators, and anyone who explains heredity for a living\u003c\/li\u003e\n\u003cli\u003eanyone whose own diagnosis or family history made the molecule personal\u003c\/li\u003e\n\u003cli\u003eshoppers looking for science earrings or biology earrings as a daily piece\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who wants the most foundational structure in biology in a small, wearable form, including for the bench, the lecture room, or anywhere else they spend their working day.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-earrings-gold-vermeil\"\u003eDNA earrings | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-earring-hoops-small\"\u003eDNA earring hoops S | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-earring-hoops-crossed\"\u003eDNA earring hoops crossed | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna\"\u003eDNA necklace V | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat style of DNA earrings are these?\u003c\/h3\u003e\n\u003cp\u003eDrop earrings rendering the DNA double helix in three dimensions, on standard sterling silver leverback hooks. The helix hangs cleanly from the lobe and reads as a proportioned structure rather than a stylised silhouette. People who wear earrings daily tend to like that the helix is recognisable from the side without being heavy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWho typically wears DNA earrings?\u003c\/h3\u003e\n\u003cp\u003eMostly people who work with the molecule: molecular biologists, geneticists, biochemists, lab researchers, and biology or medical students well into their training. Outside the field, the earrings tend to land with science teachers, with anyone whose family history of a hereditary condition made the molecule personal, and with shoppers searching for science earrings or biology earrings as a daily piece. Quiet enough for daily wear, specific enough to spark recognition from someone who knows.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size are the earrings and what material?\u003c\/h3\u003e\n\u003cp\u003eEach earring is 20 mm tall, sized so the double helix is readable as a structure rather than a vague twist. They are 925 sterling silver, nickel-free and hypoallergenic, on sterling silver leverback hooks for secure daily wear. The pair comes in a ready-to-gift jewelry box. Free worldwide DHL Express shipping in 1-5 business days, all import duties covered.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eDo you also have DNA earrings as studs, hoops, or in gold?\u003c\/h3\u003e\n\u003cp\u003eYes. The gold vermeil version of these drop earrings is the warmer counterpart of this pair. The DNA earring hoops are a separate piece, available in a smaller and a larger size and in a crossed-helix version, for shoppers who prefer the helix wrapped into a hoop rather than hanging from a leverback. The DNA necklace is the matching pendant for anyone building a fuller set.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":49518912327,"sku":"ER0023-S","price":200.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/dna-earrings-silver-earrings-science-jewelry-sciencejewelry1824-51357049160028.png?v=1698825308"},{"product_id":"heart-18k-gold-plated","title":"anatomical heart necklace | gold vermeil","description":"\u003ch2\u003eAnatomical heart necklace | gold vermeil\u003c\/h2\u003e\n\u003cp\u003eThe anatomical heart is the organ medicine has spent the longest time mapping. Four chambers, four valves, two circulations, and a self-organising electrical system that fires roughly 100,000 times a day. The gold vermeil version is the same heart as the silver, in a warmer key.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Anatomy of the Heart\u003c\/h2\u003e\n\u003cp\u003eThe heart is a four-chambered muscular pump weighing about 300 grams in an adult. The right side receives deoxygenated blood from the body and pumps it through the pulmonary arteries to the lungs. The left side receives oxygenated blood from the pulmonary veins and pumps it through the aorta to the rest of the body. The four valves (tricuspid, pulmonary, mitral, aortic) prevent backflow at each transition. The myocardium contracts in a coordinated wave triggered by the sinoatrial node, propagating through the atria, pausing at the atrioventricular node, and racing through the bundle of His and Purkinje fibres to depolarise the ventricles. Coronary arteries supplying the myocardium itself emerge from the aortic root just above the aortic valve. Cardiac surgery, electrophysiology, valve repair, and most of cardiology depend on knowing this geometry at the operating-room level.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Meaningful Gift for Science Lovers\u003c\/h2\u003e\n\u003cp\u003eThe audience is the cardiac clinical core, with the gold tending to land as the milestone version of the same idea:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecardiac surgeons, cardiologists, and electrophysiologists\u003c\/li\u003e\n\u003cli\u003ecardiac anaesthetists and perfusionists\u003c\/li\u003e\n\u003cli\u003eICU and cardiac-care nurses, paramedics\u003c\/li\u003e\n\u003cli\u003emedical students through cardiology rotations\u003c\/li\u003e\n\u003cli\u003efamily members marking a fellowship or a long career in cardiac medicine\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe most common pairing is with the silver heart counterpart. Silver as the everyday clinical piece, gold as the formal milestone marker after a cardiac fellowship or surgical milestone.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Cardiology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/anatomical-heart-necklace\"\u003eAnatomical heart necklace | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/heart-section-18k-gold-plated\"\u003eHeart section necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/heartbeat-18k-gold-plated\"\u003eHeartbeat necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/electrical-circuit-of-heart\"\u003eElectrical circuit of the heart necklace\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eSame model as the silver anatomical heart?\u003c\/h3\u003e\n\u003cp\u003eYes. Same 22 mm pendant, identical anatomical geometry. Material is the only difference. The silver is the everyday clinical piece. The gold reads more formal and is more often picked as a milestone gift after a cardiology fellowship, a major cardiac surgery case, or a long career in cardiac medicine.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is the anatomical heart so different from the symbolic shape?\u003c\/h3\u003e\n\u003cp\u003eBecause the symbolic heart has nothing to do with cardiac anatomy. The two-curves-and-a-point shape that means \"heart\" in greeting cards traces to medieval and Renaissance illustration, not to dissection. The anatomical heart is structurally asymmetric: four chambers of different sizes and wall thicknesses, great vessels arranged around the base, and a fibrous skeleton separating atria from ventricles. People who work with cardiac anatomy daily tend to find the symbolic shape distracting and the anatomical version recognisable.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat is the size, material, and chain?\u003c\/h3\u003e\n\u003cp\u003e22 mm pendant in 18K gold vermeil (sterling silver core with 2.5 micron gold plating), nickel-free and hypoallergenic. 45 cm gold vermeil chain with a 5 cm extender. Ships free worldwide via DHL Express in 1-5 business days, with all import duties prepaid. Comes in a ready-to-gift jewelry box with the 30-day “Love It or Return It” policy.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat kind of gift does the gold heart tend to be?\u003c\/h3\u003e\n\u003cp\u003eA milestone gift inside cardiology. Most often a fellowship-completion marker, a retirement gift after a long surgical career, or a thank-you from a patient to a cardiologist or cardiac surgeon after a major procedure. The recipient is usually someone whose work has centred on the heart specifically, and the gold reads as recognition of that.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":13644481462335,"sku":"NK0167-GV","price":260.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/heart-necklace-gold-vermeil-necklaces-science-jewelry-sciencejewelry1824-51379960611164.png?v=1699024397"},{"product_id":"oxytocin-18k-gold-plated","title":"oxytocin necklace | gold vermeil","description":"\u003ch2\u003eOxytocin necklace | 18K gold vermeil\u003c\/h2\u003e\n\u003cp\u003eThe oxytocin receptor was cloned in 1992 and turned a peptide already in clinical use for forty years into a research target for social cognition, autism, and the pharmacology of attachment. The 18K gold vermeil version of the molecule, at 62 mm, the largest piece in the catalogue, made for someone whose work or family history runs through this molecule.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Oxytocin\u003c\/h2\u003e\n\u003cp\u003eOxytocin is a cyclic nonapeptide synthesised in the supraoptic and paraventricular nuclei of the hypothalamus and released into circulation from the posterior pituitary. The peripheral effects (uterine contraction during labour, milk letdown during breastfeeding) have been clinically exploited since 1955, when synthetic oxytocin entered obstetric practice as Pitocin. The 1992 cloning of the oxytocin receptor opened the central nervous system side: oxytocin receptors in the amygdala, hippocampus, and cortex modulate social recognition, pair-bonding, parental behaviour, and stress response. Two decades of intranasal-oxytocin research followed, with mixed clinical results in autism and social-cognition trials but a much sharper picture of the molecule's role in mammalian social biology. The peripheral and central oxytocin systems are largely separate, which is why labour induction has clean clinical effects while social-cognition effects remain harder to translate.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWorn By\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eobstetricians and reproductive medicine specialists at career milestones\u003c\/li\u003e\n\u003cli\u003eneuroendocrinologists and social-neuroscience researchers\u003c\/li\u003e\n\u003cli\u003emidwives, doulas, and lactation consultants who work with the molecule daily\u003c\/li\u003e\n\u003cli\u003epartners and family marking a major life event tied to one of oxytocin's biological roles\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMost often given at the retirement of an obstetrician or as a 25th-anniversary gift, where the gold version at 62 mm reads as a major statement piece rather than a daily-wear molecule.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/oxytocin-flat\"\u003eOxytocin necklace flat | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003eDopamine-serotonin necklace H | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-vertical-18k-gold-plated\"\u003eSerotonin necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-18k-gold-plated\"\u003eDopamine necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/melatonin-necklace-gold-vermeil\"\u003eMelatonin necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is this version so much larger than the silver oxytocin?\u003c\/h3\u003e\n\u003cp\u003eBecause the 62 mm scale is meant for milestone gifts where the molecule reads as a statement piece. The smaller silver oxytocin sits at daily-wear scale on the chest. The gold 62 mm is the version chosen for a retirement, a major anniversary, or the milestone end of an obstetric career, where the size of the piece matches the weight of what it marks.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy does intranasal oxytocin research keep producing mixed results?\u003c\/h3\u003e\n\u003cp\u003eBecause the central and peripheral oxytocin systems are largely separate, and the route from a nasal spray to brain receptors is not as direct as early studies hoped. Some intranasal oxytocin reaches the central nervous system, but the dose-response is variable, the behavioural effects are subtle, and the trial designs have not always matched the underlying neurobiology cleanly. The molecule's role in mammalian social biology is real and well-documented from animal work. Translating that into a reliable human therapeutic has been harder than the early enthusiasm suggested.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what chain comes with it?\u003c\/h3\u003e\n\u003cp\u003e18K gold vermeil over a sterling silver core, 62 mm pendant on a 45 cm gold vermeil chain with a 5 cm extender. Substantially larger than most pieces in the catalogue, with the full peptide structure rendered in detail. Nickel-free and hypoallergenic. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs there a silver version?\u003c\/h3\u003e\n\u003cp\u003eYes, in a flat rendering. The same molecule is available as a \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/oxytocin-flat\"\u003esilver oxytocin necklace\u003c\/a\u003e at a smaller daily-wear scale. The silver and gold versions work as a pair when given between two people who share the molecule's biological or clinical significance.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":31573863923775,"sku":"NK0256-GV","price":225.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/oxytocin-necklace-gold-vermeil-necklaces-science-jewelry-sciencejewelry1824-51377643225436.png?v=1699008908"},{"product_id":"crossed-dna-ring","title":"crossed DNA ring | silver","description":"\u003ch2\u003ecrossed DNA ring | sterling silver\u003c\/h2\u003e\n\u003cp\u003eThe crossed DNA ring marks the moment two DNA strands physically meet and exchange material. In meiosis, this is called homologous recombination, the molecular event that shuffles parental genomes and produces the genetic diversity every species depends on. Worn as a ring, it sits as a quiet reference to that crossover moment.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Crossed DNA\u003c\/h2\u003e\n\u003cp\u003eWhen chromosomes recombine during meiosis, DNA strands from two parents physically exchange genetic material, forming a four-way junction called a Holliday junction (proposed 1964, visualized by X-ray crystallography in the 1990s). The strands are cut and resealed in new combinations, producing recombined chromosomes carrying DNA from both parents. This is the primary mechanism generating genetic diversity in sexually reproducing organisms. Every egg and sperm carries chromosomes that are recombinants, combinations that did not exist in either parent. The crossed geometry of this ring depicts that moment of physical contact and exchange, the mechanism by which each generation becomes genetically unique.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eWorn By\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003egeneticists and recombination researchers\u003c\/li\u003e\n\u003cli\u003emolecular biologists and CRISPR specialists\u003c\/li\u003e\n\u003cli\u003egenetics students and biochemistry researchers\u003c\/li\u003e\n\u003cli\u003eanyone who understands DNA as the language of inheritance\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Genetics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dna-9k-solid-gold\"\u003eDNA ring | 9K solid gold\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/interlocked-dna\"\u003eInterlocked DNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/silver-dna\"\u003eDNA necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eFAQ\u003c\/h2\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat makes the crossed DNA ring different from a regular DNA ring?\u003c\/h3\u003e\n\u003cp\u003eThe crossed design depicts the moment of recombination, when two DNA molecules physically intersect and exchange genetic material. A regular DNA ring shows the double helix structure. The crossed ring shows the geometric moment of genetic exchange.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is recombination important?\u003c\/h3\u003e\n\u003cp\u003eRecombination creates genetic diversity. Without it, offspring would be clones of their parents. With it, each egg and sperm carries a unique combination of DNA from both parents. This is why siblings are similar but not identical, and why populations evolve. Recombination is also the target of CRISPR and other gene editing tools.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat sizes are available?\u003c\/h3\u003e\n\u003cp\u003eUS ring sizes 5, 6, 7, 8, and 8.5. 925 polished sterling silver, nickel-free and hypoallergenic. High-polish finish. Each size comes in a ready-to-gift, eco-friendly jewelry box with the 30-day “Love It or Return It” policy. Free worldwide DHL Express shipping (1-5 business days).\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eHow do I choose the right ring size?\u003c\/h3\u003e\n\u003cp\u003eMeasure an existing ring that fits comfortably, or use a ring-sizing guide. If you are between sizes, we recommend sizing down slightly for a snug fit. Sterling silver is forgiving and can be resized if needed, but proper fit from the start ensures the best wear experience.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545506197890,"sku":"RG0004-S-5","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56548233576834,"sku":"RG0004-S-6","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56548233609602,"sku":"RG0004-S-7","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56548233642370,"sku":"RG0004-S-8","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"8.5","offer_id":56548233675138,"sku":"RG0004-S-85","price":160.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56548233707906,"sku":"RG0004-S-9","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/29_DNA_crossed_silver.png?v=1705324192"},{"product_id":"dopamine-serotonin-earring-hoops","title":"dopamine serotonin earring hoops | silver","description":"\u003ch2\u003eDopamine serotonin earring hoops | sterling silver\u003c\/h2\u003e\n\u003cp\u003eDopamine and serotonin are the two molecules that hold most of psychiatric pharmacology between them. Pursuit and motivation on one side, mood and impulse control on the other. The full pair on each ear, at conversation distance rather than chest height. Worn here as 26 mm sterling silver hoop earrings.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Dopamine and Serotonin\u003c\/h2\u003e\n\u003cp\u003eDopamine is synthesised in the substantia nigra and ventral tegmental area, with the nigrostriatal pathway controlling movement and the mesolimbic pathway encoding reward and motivation. L-DOPA replaces what is lost in Parkinson's disease. Serotonin (5-hydroxytryptamine) is synthesised mostly in the raphe nuclei in the brainstem, projecting widely across cortex and limbic structures, and modulates mood, sleep, satiety, and impulse control. Selective serotonin reuptake inhibitors are the most-prescribed class of antidepressants. The two systems balance against each other across a wide range of psychiatric and neurological conditions, which is why most psychotropic pharmacology targets one or both. Atypical antipsychotics, SNRIs, and bupropion all act somewhere on this two-molecule axis.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Tends to Wear This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003epsychiatrists, clinical psychologists, and psychotherapists\u003c\/li\u003e\n\u003cli\u003eneuropharmacologists and translational neuroscience researchers\u003c\/li\u003e\n\u003cli\u003emedical and nursing students learning monoamine pharmacology\u003c\/li\u003e\n\u003cli\u003epatients on long-term SSRI or other monoamine-targeting treatment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who wants the molecules at conversation distance rather than chest level, who finds the daily-wear earring scale easier than a pendant for a working clinical day.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003eDopamine serotonin necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-1\"\u003eDopamine serotonin necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003eDopamine serotonin necklace H | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-earring-hoops\"\u003eSerotonin earring hoops | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine\"\u003eDopamine necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy earrings rather than the necklace?\u003c\/h3\u003e\n\u003cp\u003eThe earring scale sits closer to conversation distance than a chest pendant. Visible to the wearer in the mirror, visible to anyone looking directly. Buyers who already own one of the four DS-interlocked pendants (silver V, silver H, gold V, gold H) often pick up the earring hoops as a quieter daily-wear format that does not commit to a single orientation. The interlocked pendant reads as a statement. The earring hoops read as a working-day reference.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre dopamine and serotonin really the right pair to wear together?\u003c\/h3\u003e\n\u003cp\u003eFor most of practical psychiatry, yes. Atypical antipsychotics modulate D2 and 5-HT2A. SNRIs and bupropion target the dopamine-serotonin axis. Even the SSRI class, which looks pure on paper, has indirect effects on dopaminergic tone via serotonin's modulatory role. Pairing the two molecules captures more of the pharmacology than either one alone, which is why the dopamine-serotonin design exists as a four-format family across pendants and earrings.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size are the earrings and what is the return policy?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver, 26 mm hoop earrings on ear nuts with a sterling silver core. Nickel-free and hypoallergenic, no chain. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre there other formats of the dopamine-serotonin design?\u003c\/h3\u003e\n\u003cp\u003eYes, four pendants and one other earring. The interlocked pendants come as \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003esilver V\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-1\"\u003esilver H\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003egold H\u003c\/a\u003e, and \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated-1\"\u003egold V\u003c\/a\u003e, all 40 mm. The \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-earring-hoops\"\u003eserotonin earring hoops\u003c\/a\u003e exist as a single-molecule alternative if dopamine is not part of the recipient's working pharmacology.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":38073493979313,"sku":"ER0024-S","price":185.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/028_dopamineserotoninhoops.png?v=1700036498"},{"product_id":"dopamine-serotonin-interlocked-silver-gold","title":"dopamine serotonin necklace H | silver \u0026 gold vermeil","description":"\u003ch2\u003eDopamine serotonin necklace H | sterling silver and 18K gold vermeil\u003c\/h2\u003e\n\u003cp\u003eDopamine and serotonin are the two molecules that hold most of psychiatric pharmacology between them. The bicolour pendant is the only mixed-material variant within the wider dopamine-serotonin family, the single piece that carries both finishes on one 40 mm pendant. Worn here as a 40 mm pendant in sterling silver and 18K gold vermeil.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Dopamine and Serotonin\u003c\/h2\u003e\n\u003cp\u003eDopamine is synthesised in the substantia nigra and ventral tegmental area, with the nigrostriatal pathway controlling movement and the mesolimbic pathway encoding reward and motivation. L-DOPA replaces what is lost in Parkinson's disease. Serotonin (5-hydroxytryptamine) is synthesised mostly in the raphe nuclei in the brainstem, projecting widely across cortex and limbic structures, and modulates mood, sleep, satiety, and impulse control. Selective serotonin reuptake inhibitors are the most-prescribed class of antidepressants. The two systems balance against each other across a wide range of psychiatric and neurological conditions, which is why most psychotropic pharmacology targets one or both. Atypical antipsychotics, SNRIs, and bupropion all act somewhere on this two-molecule axis.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Reaches For This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003epsychiatrists, clinical psychologists, and psychotherapists working with monoamine pharmacology\u003c\/li\u003e\n\u003cli\u003eneuropharmacologists and translational researchers\u003c\/li\u003e\n\u003cli\u003ebuyers who already own one of the single-material DS pieces and want the bicolour as the second-format pick\u003c\/li\u003e\n\u003cli\u003eanyone who likes the visual contrast of two finishes on one pendant without having to commit to silver or gold alone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe bicolour variant is the mixed-material pick within the DS family, the one chosen when neither pure silver nor pure gold is the right answer.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Molecules Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003eDopamine serotonin necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-1\"\u003eDopamine serotonin necklace H | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003eDopamine serotonin necklace H | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated-1\"\u003eDopamine serotonin necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-earring-hoops\"\u003eDopamine serotonin earring hoops | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq\"\u003e\n\u003ch2 style=\"margin-top:2em;\"\u003eFAQ\u003c\/h2\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy pick the bicolour pendant over the single-material H or V variants?\u003c\/h3\u003e\n\u003cp\u003eFor most buyers, it is about format rather than meaning. The single-material pendants exist as four pieces (silver V, silver H, gold V, gold H), and the bicolour is the fifth option for someone who wants both finishes on a single piece without having to layer two pendants. Same molecules, same 40 mm size, same chain length. Many buyers who already own one of the four single-material pieces eventually pick up the bicolour as a second-format pick.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eAre dopamine and serotonin really the right pair to wear together?\u003c\/h3\u003e\n\u003cp\u003eFor most of practical psychiatry, yes. Atypical antipsychotics modulate D2 and 5-HT2A. SNRIs and bupropion target the dopamine-serotonin axis. Even the SSRI class, which looks pure on paper, has indirect effects on dopaminergic tone via serotonin's modulatory role. Pairing the two molecules captures more of the pharmacology than either one alone, which is why the dopamine-serotonin design exists as a six-format family across pendants and earrings.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what chain comes with it?\u003c\/h3\u003e\n\u003cp\u003e925 sterling silver and 18K gold vermeil over a sterling silver core, 40 mm pendant on a 45 cm sterling silver chain (ø 1.8 mm) with a 5 cm extender. Nickel-free and hypoallergenic. Free worldwide DHL Express in 1-5 business days, with all import duties and taxes covered. 30-day “Love It or Return It” returns.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat other formats of the dopamine-serotonin design exist?\u003c\/h3\u003e\n\u003cp\u003eFive others. The single-material pendants are \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003esilver V\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-1\"\u003esilver H\u003c\/a\u003e, \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated\"\u003egold H\u003c\/a\u003e, and \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked-18k-gold-plated-1\"\u003egold V\u003c\/a\u003e, all 40 mm. The \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-earring-hoops\"\u003eearring hoops\u003c\/a\u003e are the daily-wear conversation-distance format. This bicolour piece is the sixth option for buyers who want both finishes on a single pendant.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":41542316064945,"sku":"NK0109-SGV","price":210.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/012_dop-serhorizontal_silver_vermeil.png?v=1699518482"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/collections\/06-anniversary.png?v=1781771598","url":"https:\/\/sciencejewelry1824.shop\/collections\/anniversary-gifts.oembed","provider":"sciencejewelry1824","version":"1.0","type":"link"}