{"title":"Welcome Back","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eA small curated selection from across the collection, for people who would rather wear meaning than decoration. Molecules, anatomy, and quiet curiosities, in silver, vermeil, and gold. All made small enough to wear.\u003c\/p\u003e","products":[{"product_id":"neuron","title":"neuron necklace | silver","description":"\u003ch2\u003eNeuron necklace | sterling silver\u003c\/h2\u003e\n\u003cp\u003eThe human brain holds roughly 86 billion neurons, each firing through the same basic architecture: cell body, dendrites, axon, synaptic terminals. The unit that took most of the twentieth century to understand and now anchors most of neuroscience. Worn here as a 39 mm sterling silver pendant.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind the Neuron\u003c\/h2\u003e\n\u003cp\u003eThe neuron doctrine, the principle that the brain is composed of discrete cellular units rather than a continuous reticulum, was settled by Santiago Ramón y Cajal's silver-staining studies in the 1880s and 1890s. Cajal's silver impregnation revealed individual neurons in cortex, cerebellum, retina, and spinal cord, settling a long debate with Camillo Golgi (who maintained the reticular theory). The two shared the 1906 Nobel Prize in Physiology or Medicine. Each neuron computes through dendritic input integration, cell-body summation, and axonal action potential propagation, with myelination by oligodendrocytes (CNS) or Schwann cells (PNS) speeding conduction. Synapse counts in the human cortex run between 10¹⁴ and 10¹⁵. The diversity is enormous: pyramidal cells, interneurons, motor neurons, sensory neurons, Purkinje cells, granule cells, each tuned to a particular computational role.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Tends to Wear This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eneuroscientists across systems, cellular, molecular, and computational subfields\u003c\/li\u003e\n\u003cli\u003eneurologists and clinical neuroscience trainees\u003c\/li\u003e\n\u003cli\u003emedical and graduate students learning the neuron doctrine and synaptic transmission\u003c\/li\u003e\n\u003cli\u003escience communicators and educators teaching brain biology\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who knows that Cajal's silver-staining method is part of why the silver version reads cleanly here, and for whom the neuron is the unit that frames an entire field rather than just a textbook image.\u003c\/p\u003e\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\/neuron-18k-gold-plated\"\u003eNeuron necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/neuron-earrings\"\u003eNeuron earrings | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/purkinje-cell\"\u003ePurkinje cell necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/spindle-neuron\"\u003eSpindle neuron necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/sagittal-brain-18k-gold-plated\"\u003eSagittal brain 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 silver the right material for a neuron pendant?\u003c\/h3\u003e\n\u003cp\u003eBeyond aesthetic preference, the silver version carries a quiet methodological link. Cajal's 1873 silver-staining technique, developed to visualise individual neurons, made the neuron doctrine possible. The whole modern picture of the brain as a network of discrete cells rests on a metallic stain. The silver pendant catches that history without leaning on it. Buyers in working neuroscience tend to recognise the link without needing it explained.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs the neuron pendant for any specific subfield?\u003c\/h3\u003e\n\u003cp\u003eIt works across most of neuroscience because the cell type is the foundational unit. Cellular neuroscientists and electrophysiologists buy it as a working reference. Systems and cognitive neuroscientists buy it as the iconic image of the field. Clinical neuroscientists and neurologists buy it as the molecular substrate of the conditions they treat. Educators buy it because the neuron is the first thing a student learns and the last thing they forget.\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, 39 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;\"\u003eIs there a gold version?\u003c\/h3\u003e\n\u003cp\u003eYes. The same neuron is available in \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/neuron-18k-gold-plated\"\u003e18K gold vermeil\u003c\/a\u003e at the same scale and chain length. Silver tends to suit working clinical and lab wear (and carries the Cajal stain link). Gold tends to suit graduation, retirement, or a major appointment in neuroscience or clinical neurology.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":26420321479,"sku":"NK0239-S","price":155.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/silver_neuron_necklace.png?v=1727355888"},{"product_id":"dna","title":"DNA necklace V | silver","description":"\u003ch2\u003eDNA necklace V | sterling silver\u003c\/h2\u003e\n\u003cp\u003eA DNA necklace for molecular biologists, geneticists, and anyone who can sketch the double helix from memory. The structure that stores every inheritable instruction in every living cell, vertical orientation, 925 sterling silver, 20 mm.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Science Behind DNA\u003c\/h2\u003e\n\u003cp\u003eRosalind Franklin's X-ray crystallography image of DNA, known as Photo 51 and taken in May 1952, was the critical evidence that the helix was right-handed and that the phosphate-sugar backbone lay on the outside. Watson saw the photograph in early 1953, shown to him by Maurice Wilkins, and it confirmed that the Watson and Crick model was on the right track. The double helix structure was published in Nature on 25 April 1953. Franklin died of ovarian cancer in 1958, aged 37, before the Nobel Prize was awarded to Watson, Crick, and Wilkins in 1962. Her contribution to one of the most important discoveries in biology was not formally acknowledged in her lifetime.\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 saw the helix in their first textbook and never quite let it go.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists, geneticists, and biochemists\u003c\/li\u003e\n\u003cli\u003ebiology and medical students through their first genetics rotation\u003c\/li\u003e\n\u003cli\u003escience teachers and communicators who explain heredity for a living\u003c\/li\u003e\n\u003cli\u003eanyone whose own diagnosis or family history made the molecule personal\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who wants the most foundational object in biology in a form they can wear every 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-18k-gold-plated\"\u003eDNA necklace V | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/horizontal-dna\"\u003eDNA necklace H | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/interlocked-dna\"\u003eInterlocked DNA necklace | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/rna\"\u003eRNA necklace | 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;\"\u003eWho is the DNA necklace for?\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. It also works as a quietly meaningful gift for someone whose own genetic story has become part of their identity, and for science teachers who have drawn the helix on a whiteboard a thousand times.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat does the pendant show?\u003c\/h3\u003e\n\u003cp\u003eA double helix in vertical orientation, 20 mm tall. Two sugar-phosphate backbones spiralling around each other with the base pairs running between them. The proportions follow the standard B-form helix, the configuration most often drawn in textbooks and the one that matches Photo 51. It is recognisable from across a room, which is part of why it has held its place as the most iconic structure in biology.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what does it ship with?\u003c\/h3\u003e\n\u003cp\u003eThe pendant is 20 mm tall, sized to read clearly without being heavy. It comes on a 45 cm sterling silver chain (1.8 mm width, lobster clasp) with a 5 cm extender, so it works open-collar or under a lab coat. Free worldwide DHL Express shipping in 1-5 business days, all import duties covered, in a ready-to-gift jewelry box.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWill a working scientist actually appreciate this, or is DNA too generic?\u003c\/h3\u003e\n\u003cp\u003eThe double helix is the most reproduced shape in biology, which is exactly why getting it right matters. A lot of DNA jewelry leans aesthetic and skips the geometry. This pendant follows the standard B-form helix, the same shape that lives in every textbook diagram and in every scientist's head. People who have stared at the structure for years tend to notice when it is the right one.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":26426502663,"sku":"NK0100-S","price":150.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/dna-necklace-v-silver-necklaces-science-jewelry-sciencejewelry1824-51378176164188.png?v=1699013246"},{"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":"dopamine-serotonin-interlocked-1","title":"dopamine serotonin necklace H | silver","description":"\u003ch2\u003eDopamine serotonin necklace H | sterling silver\u003c\/h2\u003e\n\u003cp\u003eThe horizontal version of the interlocked design, the silver counterpart to the gold-H pendant. Daily-wear scale for someone whose work runs on the dopamine-serotonin axis: psychiatry, neurology, neuropharmacology, the wide field where these two molecules balance against each other across most of clinical practice. Worn here as a 40 mm sterling silver pendant.\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.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Will Recognise It\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003epsychiatrists and clinical psychologists working with monoamine pharmacology\u003c\/li\u003e\n\u003cli\u003eneurologists at the dopamine end of the axis (movement disorders, Parkinson's)\u003c\/li\u003e\n\u003cli\u003eneuropharmacologists and translational researchers\u003c\/li\u003e\n\u003cli\u003emedical students and residents learning the dopamine and serotonin systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe silver-H is the working clinical pair partner to the gold-H milestone version, picked daily by clinicians who prefer the horizontal hang or who already own the silver-V.\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-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\"\u003eDopamine necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/serotonin-vertical\"\u003eSerotonin necklace V | 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;\"\u003eWhat's the difference between H and V interlocked silver?\u003c\/h3\u003e\n\u003cp\u003eThe orientation, not the molecules. The horizontal (H) version sits across the chest with the longer dimension running left-to-right. The vertical (V) version hangs along the chest axis with the longer dimension running top-to-bottom. Same dopamine and serotonin structures, same 40 mm pendant size, same chain length. The choice is aesthetic. H tends to suit a fuller chest line and a slightly more conversational visual. V tends to suit longer necklines and a more formal hang.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy does the silver-H matter when the gold-H exists?\u003c\/h3\u003e\n\u003cp\u003eBecause silver and gold mark different occasions in this catalogue. The gold-H reads as recognition, given at milestones in psychiatry or neurology. The silver-H is the daily clinical-wear pair partner: same orientation, working scale for a lab coat or a clinical setting. Many of the people who already own the gold version eventually pick up the silver for the working day, or the other way round.\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, 40 mm pendant on a 45 cm sterling silver chain 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;\"\u003eAre there other versions of the interlocked design?\u003c\/h3\u003e\n\u003cp\u003eYes. The full set is available as \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/dopamine-serotonin-interlocked\"\u003esilver V\u003c\/a\u003e, this silver H, \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. Same 40 mm pendant across all four, same interlocked geometry, four ways to wear it depending on material preference and orientation.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":50478250887,"sku":"NK0108-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/silver_dopamine_serotonin_necklace.png?v=1727338825"},{"product_id":"anatomical-heart-necklace","title":"anatomical heart necklace | silver","description":"\u003ch2\u003eAnatomical heart necklace | sterling silver\u003c\/h2\u003e\n\u003cp\u003eAn anatomical heart necklace for cardiologists, surgeons, and anyone who prefers the real thing to the cartoon. The four-chambered pump that beats roughly 100,000 times a day without instruction, in sterling silver.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Anatomy of the Heart\u003c\/h2\u003e\n\u003cp\u003eThe heart is two pumps in one organ. The right side moves deoxygenated blood to the lungs, the left side pushes oxygenated blood through the body. Four chambers, four valves, and a small bundle of specialised cells in the right atrium that sets the rhythm. The structure most people draw with two curves and a dimple is, in fact, an asymmetric muscle about the size of a closed fist, sitting slightly left of centre and tilted forward. The pendant follows the real anatomy: apex pointing down, two atria above, two ventricles below, the great vessels exiting at the top.\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 study, treat, or repair the heart for a living.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003ecardiologists, cardiac surgeons, and electrophysiologists\u003c\/li\u003e\n\u003cli\u003enurses and technicians in cardiac care or perfusion\u003c\/li\u003e\n\u003cli\u003emedical students and residents through the cardiology rotation\u003c\/li\u003e\n\u003cli\u003epartners or parents of anyone in the above list\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor the colleague who knows the difference between a textbook heart and a real one.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Human Anatomy Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/heart-18k-gold-plated\"\u003eAnatomical heart necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ventricular-system-necklace-gold-vermeil\"\u003eVentricular system necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/heartbeat\"\u003eHeartbeat necklace | sterling silver\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;\"\u003eWho is this anatomical heart necklace for?\u003c\/h3\u003e\n\u003cp\u003eIt tends to land with cardiologists, cardiac surgeons, and electrophysiologists, but also with the wider circle around them: cardiac nurses, perfusionists, medical students mid-rotation, and the partners who have learned the difference between an MI and an arrhythmia by osmosis. It also speaks to anyone who finds the cartoon heart a bit thin and prefers the real one.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy doesn't a real heart look like a heart shape?\u003c\/h3\u003e\n\u003cp\u003eThe classic heart symbol probably has nothing to do with the organ. The most common theory traces it to silphium, an extinct plant from ancient Cyrene whose seedpod looked exactly like a Valentine. The real heart is asymmetric, with a rounded base and a pointed apex tilted to the left. Once you have seen one, the cartoon version stops looking right.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size and chain does this come with?\u003c\/h3\u003e\n\u003cp\u003eThe pendant is 20 mm and weighs roughly the same as a coin. It sits on a 45 cm sterling silver chain with a 5 cm extender, so it works at collarbone or just below. Free worldwide DHL Express shipping in 1-5 business days, all import duties included, ships in a ready-to-gift jewelry box.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs the anatomy accurate enough for a medical professional?\u003c\/h3\u003e\n\u003cp\u003eYes. The proportions, the chamber positions, and the great vessels are modelled on a real heart, not a stylised one. It will pass inspection from someone who has held one. If accuracy is the worry, this is the version you want.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":52035665927,"sku":"NK0168-S","price":200.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/anatomical_correct_heart_necklace_silver.png?v=1726840321"},{"product_id":"tardigrade-18k-gold-plated","title":"tardigrade necklace | gold vermeil","description":"\u003ch2\u003etardigrade necklace | 18k gold vermeil\u003c\/h2\u003e\n\u003cp\u003eAn animal so unkillable that we test spacecraft on them. Suspend a tardigrade in a vacuum at near absolute zero, bombard it with radiation, and it still wakes up. In 18k gold vermeil for the person who respects indestructibility.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science of the Tardigrade\u003c\/h2\u003e\n\u003cp\u003eTardigrades were first described in 1773 and named Tardigrada (slow steppers) in 1776. Over 1300 species are known from every habitat on Earth, from ocean sediment to Antarctic ice. Their cryptobiosis is not simple dehydration tolerance. At the molecular level, tardigrades synthesize specific proteins (CAHS, SAHS, Dsup) that form glass-like amorphous solids protecting cellular structures during desiccation and shield DNA from ionizing radiation. In 2007, tardigrades became the first animals shown to survive direct exposure to the vacuum and radiation of outer space.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eastrobiologists and extremophile researchers\u003c\/li\u003e\n\u003cli\u003eanyone who loves that the toughest animal on Earth is also charming\u003c\/li\u003e\n\u003cli\u003escience enthusiasts who want something genuinely unusual\u003c\/li\u003e\n\u003cli\u003eas a self-gift in gold, for quiet confidence\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eExplore Related Biology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/tardigrade\"\u003eTardigrade necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/rotifer\"\u003eRotifer necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/coronavirus-18k-gold-plated\"\u003eCoronavirus necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ebola-virus\"\u003eEbola virus 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;\"\u003eWho should receive this gift?\u003c\/h3\u003e\n\u003cp\u003eScience lovers who appreciate gold, microbiologists, astrobiologists, extremophile researchers, and anyone who thinks tardigrades deserve precious metal treatment. Ready-to-gift packaging included.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat exactly is cryptobiosis?\u003c\/h3\u003e\n\u003cp\u003eCryptobiosis is a metabolically inert state in which tardigrades suspend all biological activity. At the cellular level, water is replaced by specialized protective proteins that form an amorphous glassy state. This allows survival in conditions that would instantly kill most life: temperatures from -272°C to +150°C, vacuum, desiccation for decades, and radiation doses 1000 times lethal to humans.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat material and chain length?\u003c\/h3\u003e\n\u003cp\u003e22 mm 18k gold vermeil pendant on a 45 cm gold vermeil chain with 5 cm extender. Gold vermeil (sterling silver core with 2.5 micron 18k gold plating), nickel-free and hypoallergenic. 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;\"\u003eGold vs. silver on extremophiles?\u003c\/h3\u003e\n\u003cp\u003eGold suits the indestructibility. The warm tone pairs well with the water bear's survival reputation, and gold vermeil resists tarnish better than silver over time. Both materials are durable for daily wear.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":31642635305023,"sku":"NK0352-GV","price":230.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/tardigrade-necklace-gold-vermeil-necklaces-science-jewelry-sciencejewelry1824-51387094729052.png?v=1699092431"},{"product_id":"darwins-phylogenetic-tree-18k-gold-plated","title":"Darwin's phylogenetic tree necklace | gold vermeil","description":"\u003ch2\u003eDarwin's phylogenetic tree necklace | 18k gold vermeil\u003c\/h2\u003e\n\u003cp\u003eA Darwin's phylogenetic tree necklace for evolutionary biologists, palaeontologists, and anyone who can place the 1837 sketch within a sentence of where it sits in the history of biology. The first tree of life, drawn into Darwin's Notebook B, in 18k gold vermeil.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eDarwin's Tree of Life\u003c\/h2\u003e\n\u003cp\u003eIn July 1837, twenty-two years before On the Origin of Species, Darwin sketched a small branching diagram into the page of his Notebook B and wrote the words \"I think\" above it. The sketch shows lineages diverging from a common ancestor and is the first tree of life on record. It anticipated the modern understanding of common descent by over 150 years of subsequent evidence. Every genome sequenced since has confirmed the branching, hierarchical structure that Darwin proposed. Modern molecular phylogenetics, which uses DNA and protein sequences to reconstruct evolutionary relationships, has filled in the details and rearranged some major branches, especially among microbes, but the core insight has held. Phylogenetic trees are now the working framework for evolutionary biology, comparative genomics, epidemiology, and conservation.\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 keep \"I think\" in the margin of their own notebooks.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eevolutionary biologists, ecologists, and palaeontologists\u003c\/li\u003e\n\u003cli\u003ephylogeneticists and computational biologists working on tree reconstruction\u003c\/li\u003e\n\u003cli\u003ebiology teachers and professors who teach Darwin and the history of evolutionary thought\u003c\/li\u003e\n\u003cli\u003estudents of the history and philosophy of science\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone whose work or thinking still rests on the diagram drawn in a notebook nearly two hundred years ago.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Evolutionary Biology Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/darwins-phylogenetic-tree\"\u003eDarwin's phylogenetic tree necklace | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/phylogenetic-tree-18k-gold-plated\"\u003ePhylogenetic tree necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ammonite-18k-gold-plated\"\u003eAmmonite necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/arabidopsis-18k-gold-plated\"\u003eArabidopsis necklace | gold vermeil\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 does the pendant actually show?\u003c\/h3\u003e\n\u003cp\u003eThe branching sketch from Darwin's 1837 Notebook B, the diagram he topped with the words \"I think\". A small branching tree where lineages diverge from a common point. It is one of the earliest visual ideas in modern biology and the conceptual ancestor of every phylogenetic tree drawn since.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWill an evolutionary biologist actually appreciate this?\u003c\/h3\u003e\n\u003cp\u003eYes. The 1837 sketch is part of the field's shared imagination, the kind of historical artefact that turns up on conference slides and in textbook prefaces. Wearing it works as a quiet acknowledgement that the idea came first as a rough drawing, long before the data caught up. People in the field tend to recognise it and smile.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eHow is this different from the schematic phylogenetic tree pendant?\u003c\/h3\u003e\n\u003cp\u003eThe schematic phylogenetic tree pendant is a clean, abstract branching tree, the kind that appears in modern textbooks. This pendant is the specific historical sketch from Darwin's notebook, including the looser, hand-drawn quality of the original. Same family of ideas, different references. People who care about Darwin himself usually choose this one; people who care about the modern abstraction usually choose the other.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what does it ship with?\u003c\/h3\u003e\n\u003cp\u003eThe pendant is 18 mm, sized to keep the proportions of the original sketch readable. The 18k gold vermeil is a 2.5 micron gold layer over a sterling silver core, nickel-free and hypoallergenic. It ships on a 45 cm gold-plated chain with a 5 cm extender. Free worldwide DHL Express shipping in 1-5 business days, all import duties covered, in a ready-to-gift jewelry box.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":31660061130815,"sku":"NK0090-GV","price":185.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/darwin-s-phylogenetic-tree-necklace-gold-vermeil-necklaces-science-jewelry-sciencejewelry1824-51379977093468.png?v=1699024390"},{"product_id":"uterus-18k-gold-plated-1","title":"uterus necklace V | gold vermeil","description":"\u003ch2\u003eUterus necklace V | 18k gold vermeil\u003c\/h2\u003e\n\u003cp\u003eA uterus necklace for OB-GYNs, midwives, fertility specialists, and anyone who carries the organ where every human life begins as a quietly meaningful symbol. The smaller of the two uterus pendants, with the chain passing through a single loop at the top, in 18k gold vermeil, 18 mm.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eThe Anatomy of the Uterus\u003c\/h2\u003e\n\u003cp\u003eThe uterus is a pear-shaped muscular organ with three regions: the fundus (the dome above the fallopian tube openings), the body, and the cervix at the lower end. Its wall has three layers: the perimetrium on the outside, the myometrium of smooth muscle that contracts during labour, and the endometrium that thickens and sheds with each menstrual cycle. During pregnancy the myometrium grows from roughly 60 grams to over a kilogram, primarily through hypertrophy of existing muscle cells with limited new cell formation. Coordinated contractions at term, driven by oxytocin and prostaglandins and synchronised through gap junctions, generate the forces of labour. The endometrium is the site of embryo implantation, regulated by progesterone. The uterus is at the centre of fertility medicine, oncology of the female reproductive tract, and a significant share of public-health policy.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eA Meaningful Gift for Science Lovers\u003c\/h2\u003e\n\u003cp\u003eFor the people whose work or experience centres on this organ, in a smaller and warmer form.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eobstetricians, gynaecologists, and gynaecological oncologists\u003c\/li\u003e\n\u003cli\u003emidwives and labour and delivery nurses\u003c\/li\u003e\n\u003cli\u003ereproductive endocrinologists, fertility specialists, and IVF clinicians\u003c\/li\u003e\n\u003cli\u003emedical students through their first obstetrics rotation\u003c\/li\u003e\n\u003cli\u003ewomen carrying their own reproductive story, including IVF, miscarriage, hysterectomy, or birth\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe smaller gold pendant reads as everyday rather than statement, which is what most clinicians actually wear in practice.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top:2em;\"\u003eExplore Related Obstetrics Jewelry\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/uterus-1\"\u003eUterus necklace V | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/uterus-18k-gold-plated\"\u003eUterus necklace H | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/embryo\"\u003eEmbryo necklace | sterling silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/fetus-18k-gold-plated\"\u003eFetus necklace | gold vermeil\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 is the difference between the V and H uterus necklaces?\u003c\/h3\u003e\n\u003cp\u003eThe pendant shape is identical on both: the same uterus design, fundus at the top, cervix at the bottom, fallopian tubes extending to either side. The difference is size and chain attachment. The vertical version (this one) is the smaller size at 18 mm, with a single loop at the top of the pendant so the chain passes straight through the centre. The horizontal version is larger at 27 mm, with two loops set near the lateral ends where the chain threads through. Same anatomy, two ways to wear it. Both available in sterling silver and 18k gold vermeil.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eIs this appropriate after a difficult experience like miscarriage, infertility, or hysterectomy?\u003c\/h3\u003e\n\u003cp\u003eOften yes. The uterus is the organ at the centre of some of the most personal medical experiences a person can have, and people respond to that very differently. The smaller V pendant tends to work well for someone who wants the symbol close without making it the loudest thing in the room. A short note that acknowledges what they came through, without trying to summarise it, usually does more than the pendant alone.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat size is the pendant and what does it ship with?\u003c\/h3\u003e\n\u003cp\u003eThe pendant is 18 mm, the smaller of the two uterus sizes. The 18k gold vermeil is a 2.5 micron gold layer over a sterling silver core, nickel-free and hypoallergenic. It ships on a 45 cm gold-plated chain that passes through a single loop at the top of the pendant, with a 5 cm extender and lobster clasp. Free worldwide DHL Express shipping in 1-5 business days, all import duties covered, in a ready-to-gift jewelry box.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy gold vermeil rather than solid gold?\u003c\/h3\u003e\n\u003cp\u003eGold vermeil is the practical premium option: a 2.5 micron 18k gold layer fused to a sterling silver core. It carries the warmth and tone of gold without the weight or price of solid gold, which matters for a piece you want to wear daily including in clinical settings. The base is sterling silver, hypoallergenic, and the gold layer is thick enough to last with normal care.\u003c\/p\u003e\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":41215872434353,"sku":"NK0387-GV","price":205.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/uterus-necklace-v-gold-vermeil-necklaces-science-jewelry-sciencejewelry1824-51400598061404.png?v=1699250831"},{"product_id":"dna-9k-solid-gold","title":"DNA ring | 9K solid yellow gold","description":"\u003ch2\u003eDNA ring | 9K solid yellow gold\u003c\/h2\u003e\n\u003cp\u003eThe double helix is the most recognisable shape in biology. Every cell in your body contains 3.2 billion base pairs of it, and every time a cell divides it unspools 2 metres of DNA to copy itself. Solid gold is for people who want to carry it permanently.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind the DNA Double Helix\u003c\/h2\u003e\n\u003cp\u003eWatson and Crick published the structure in 1953: the B-form of DNA, two antiparallel strands held together by base pairing (A-T and G-C) and stacked base interactions. DNA is remarkably stable under correct storage. Ancient DNA has been recovered from Neanderthal remains more than 400,000 years old. In living cells, an orchestra of repair enzymes maintains the helix, correcting mismatches and managing torsional stress as the helix unwinds during replication and transcription. The circular form of DNA found in bacteria, mitochondria, and chloroplasts has no free ends to protect, a topology that the ring form of this piece echoes.\u003c\/p\u003e\n\n\u003ch2 style=\"margin-top: 2em;\"\u003eA Quiet Symbol For\u003c\/h2\u003e\n\u003cp\u003eResearchers and scientists who wear jewelry daily and want something permanent:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003emolecular biologists and geneticists\u003c\/li\u003e\n\u003cli\u003escientists buying a significant, lasting piece\u003c\/li\u003e\n\u003cli\u003eanyone who wants to carry the structure that codes for life\u003c\/li\u003e\n\u003cli\u003epeople for whom DNA is central to their work or identity\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\/horizontal-dna\"\u003eDNA necklace H | silver\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\/dna-18k-gold-plated\"\u003eDNA necklace V | 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 | 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 solid gold DNA a luxury piece or a scientist's piece?\u003c\/h3\u003e\n\u003cp\u003eIt reads as both. But the power comes from meaning, not price. A molecular biologist or geneticist wearing solid gold DNA is making a statement about longevity and commitment: this is not a temporary piece, it is permanent like the DNA itself.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhy is DNA the most iconic molecule?\u003c\/h3\u003e\n\u003cp\u003eBecause it is the physical basis of heredity and life. Every cell in your body contains it. Its discovery in 1953 and the complete sequencing of the human genome in 2003 represent watershed moments in biology. No other structure carries more meaning in science.\u003c\/p\u003e\n\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat is the size and material?\u003c\/h3\u003e\n\u003cp\u003e9K solid yellow gold, nickel-free and hypoallergenic, available in US ring sizes 5-9. High-polish finish. 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;\"\u003eHow do I pick the right ring size?\u003c\/h3\u003e\n\u003cp\u003eUS 7 is the typical middle size. US 9 is common for men, US 5-6 for smaller hands. If unsure, wrap a strip of paper around the finger and measure across. The 30-day return policy covers exchanges if the size needs adjustment.\u003c\/p\u003e\n\n\u003c\/section\u003e","brand":"sciencejewelry1824","offers":[{"title":"5","offer_id":56545496269186,"sku":"RG0009-9YG-5","price":380.0,"currency_code":"EUR","in_stock":true},{"title":"6","offer_id":56548234002818,"sku":"RG0009-9YG-6","price":380.0,"currency_code":"EUR","in_stock":true},{"title":"7","offer_id":56548234035586,"sku":"RG0009-9YG-7","price":380.0,"currency_code":"EUR","in_stock":true},{"title":"8","offer_id":56548234068354,"sku":"RG0009-9YG-8","price":380.0,"currency_code":"EUR","in_stock":true},{"title":"9","offer_id":56548234101122,"sku":"RG0009-9YG-9","price":380.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/dna-ring-9k-solid-yellow-gold-rings-science-jewelry-5-sciencejewelry1824-51401458975068.png?v=1699261808"},{"product_id":"ketamine-propofol-interlocked-horizontal","title":"ketamine propofol necklace H | silver","description":"\u003ch2\u003eKetamine propofol necklace H | sterling silver\u003c\/h2\u003e\n\u003cp\u003eIf you have spent enough time running ketofol on procedural sedations to know how the two molecules cover for each other, you already know what the pendant carries. Ketamine sympathomimetic, propofol fast-onset hypnotic, the haemodynamic balance that made the combination standard ED practice. Worn here as a 38 mm sterling silver pendant.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eThe Science Behind Ketamine and Propofol\u003c\/h2\u003e\n\u003cp\u003eKetamine antagonises the NMDA glutamate receptor and produces dissociative anaesthesia while preserving airway reflexes and cardiovascular tone. Propofol acts as a positive allosteric modulator of the GABA-A receptor, producing rapid-onset hypnosis with quick recovery but a tendency to drop blood pressure and respiratory drive. Used together at sub-anaesthetic doses, the ketofol combination balances the two profiles: ketamine's sympathomimetic effect counters propofol's haemodynamic dip, propofol's smooth offset counters ketamine's emergence phenomena, and the combined sedation depth is reached at lower doses of each. The combination became standard procedural sedation in emergency medicine and intensive care from roughly 2007 onwards, with multiple comparative trials versus propofol-alone showing equivalent or improved haemodynamic stability and patient satisfaction. The horizontal interlocked design carries both molecules in a single 38 mm pendant.\u003c\/p\u003e\n\u003ch2 style=\"margin-top: 2em;\"\u003eWho Reaches For This\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eanaesthesiologists and emergency physicians running procedural sedation regularly\u003c\/li\u003e\n\u003cli\u003eintensive care doctors and critical care nurses working with sedation regimens\u003c\/li\u003e\n\u003cli\u003eclinical pharmacologists and procedural-sedation researchers\u003c\/li\u003e\n\u003cli\u003eresidents in anaesthesia, emergency medicine, or intensive care training\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor someone who recognises ketofol as a working combination rather than as two separate molecules, and who knows why the haemodynamic balance is the point.\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\/ketamine-propofol-interlocked-horizontal-gold-vermeil\"\u003eKetamine propofol necklace H | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/propofol-ketamine-interlocked-vertical\"\u003ePropofol ketamine necklace V | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ketamine\"\u003eKetamine necklace | silver\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ketamine-necklace-gold-vermeil\"\u003eKetamine necklace | gold vermeil\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/glutamate\"\u003eGlutamate 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 pair ketamine and propofol on a single pendant rather than two?\u003c\/h3\u003e\n\u003cp\u003eBecause the ketofol combination is a clinical entity in its own right, not just two co-administered drugs. The ratio matters, the haemodynamic balance is the reason for the pairing, and most clinicians who reach for ketofol are thinking about the combination as one decision rather than two separate ones. The interlocked design carries that thinking. Buyers who want either molecule alone tend to pick the standalone \u003ca href=\"https:\/\/sciencejewelry1824.shop\/products\/ketamine\"\u003eketamine necklace\u003c\/a\u003e instead.\u003c\/p\u003e\n\u003ch3 style=\"margin-top:1.75em;\"\u003eWhat's the haemodynamic argument for ketofol over propofol-alone?\u003c\/h3\u003e\n\u003cp\u003ePropofol-only procedural sedation often drops blood pressure, especially in elderly or volume-depleted patients, and can blunt respiratory drive enough to need bag-mask ventilation. Ketamine's sympathomimetic effect raises heart rate and blood pressure modestly, which counterbalances propofol's drop. Combining the two at lower doses of each gives smooth sedation with better haemodynamic stability. Trial data from emergency-medicine procedural sedation registries supports the practice, and ketofol has been a standard option in most ED protocols for over a decade.\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, 38 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's the difference between H and V ketamine-propofol?\u003c\/h3\u003e\n\u003cp\u003eOrientation, not the molecules. The horizontal (H) version sits across the chest with the longer dimension running left-to-right. The vertical (V) version hangs along the chest axis with the longer dimension running top-to-bottom. Same 38 mm pendant size, same chain length. Both exist in silver and 18K gold vermeil. The H tends to suit fuller necklines and a more conversational visual. V tends to suit longer necklines and a more formal hang.\u003c\/p\u003e\n\u003c\/section\u003e\n","brand":"sciencejewelry1824","offers":[{"title":"Default Title","offer_id":41927146635441,"sku":"NK0194-S","price":160.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/files\/ketamine-propofol-necklace-h-silver-necklaces-science-jewelry-sciencejewelry1824-51400419803484.png?v=1699248488"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1411\/4806\/collections\/neuron_silver_model_10a9c34c-2cb8-45c2-bd4b-2646d057f83e.png?v=1777360243","url":"https:\/\/sciencejewelry1824.shop\/collections\/welcome-back.oembed","provider":"sciencejewelry1824","version":"1.0","type":"link"}