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Caffeine necklace | 18K gold vermeil
In 1819, Friedlieb Ferdinand Runge isolated caffeine from coffee beans at the request of Goethe, who had given him the beans to analyse. The result was the first pure isolation of the world's most-consumed psychoactive molecule. The 18K gold vermeil version of the structure, at 25 mm, the milestone-gift companion to the silver pendant.
The Science Behind Caffeine
Caffeine is 1,3,7-trimethylxanthine, a methylxanthine that acts as a competitive antagonist at adenosine A1 and A2A receptors. By blocking adenosine signalling, caffeine prevents the gradual sleep pressure adenosine accumulation produces over a waking day. Downstream effects on dopamine and noradrenaline release follow. The wakefulness effect is upstream of dopamine, not direct on it. This is why caffeine and amphetamine, which both increase alertness, work through completely different mechanisms.
Worn By
- biochemists and pharmacologists at career milestones
- physicians and researchers in sleep medicine, neuroscience, or metabolism
- graduates marking the end of a long thesis fuelled by the molecule itself
- partners and family of working scientists looking for a meaningful gold gift
Most often given on a science graduation, where the gold version reads as recognition of the long hours, often by people who shared the coffee.
Explore Related Molecules Jewelry
- Caffeine necklace | silver
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- Serotonin necklace V | gold vermeil
- Glucose necklace | gold vermeil
FAQ
Why pick the gold caffeine over the silver?
Two reasons in roughly equal measure. The first is the milestone framing: gold reads as recognition where silver reads as daily wear. The second is straightforward aesthetic preference. Same 25 mm pendant, same chain length, same molecule. The choice is about what the gift is meant to mark, not what caffeine does in the brain.
Why does caffeine work on adenosine receptors rather than directly on dopamine?
Because adenosine is the molecule that builds up during waking hours and produces sleep pressure. Caffeine fits the adenosine receptor binding pocket well enough to block it without activating it, which is the textbook definition of a competitive antagonist. Once adenosine signalling is blunted, downstream dopamine release is no longer suppressed. The wakefulness effect is upstream of dopamine, not direct on it. This is why caffeine and amphetamine, which both increase alertness, work through completely different mechanisms.
What size is the pendant and what chain comes with it?
18K gold vermeil over a sterling silver core, 25 mm pendant on a 45 cm gold vermeil 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.
Is there a silver version?
Yes. The same 25 mm caffeine pendant comes in sterling silver at the same chain length. Silver tends to suit daily wear, gold tends to suit graduation, retirement, or a major academic appointment.
Molecules
Delve into the hidden elegance of science with our meticulously crafted jewelry, inspired by the intricate structures of chemical molecules. Each piece serves as a tactile tribute to the building blocks of life and matter, capturing the allure of atoms and bonds in precious metals. A harmonious fusion of art and science, these creations are more than mere accessories; they're a celebration of the enigmatic beauty that underpins our universe.
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