caffeine ring | silver US Size:7 The gold tends to mark

The gold tends to mark a fellowship completion

and theoretical physicists

Two serpents around a winged staff

Serotonin necklace V | sterling silver

Pendant scale

caffeine ring | silver US Size:7 The gold tends to markCaffeine ring sterling silver If you cannot read, write, or run a clinic before your second cup, you already know what the ring carries. Caffeine, 1,3,7 trimethylxanthine, the most consumed psychoactive drug on the planet. Worn here as a sterling silver ring in US sizes 5 to 9. The Chemistry of Caffeine Caffeine is 1,3,7 trimethylxanthine, structurally one methyl group more than theobromine (3,7 dimethylxanthine). It was first isolated from coffee