Get some outside!

"Is Serotonin your favorite little neurotransmitter? Show the world with this 1.25" sterling silver disc hand stamped with the molecular structure for Serotonin.

Each letter, digit, and line is hand stamped creating a truly one-of-a-kind necklace.

Comes with a 16" or 18" sterling silver ball chain [please specify with your order], and is packed in a purple 100% recycled gift box.

NEED A LONGER CHAIN or DIFFERENT STYLE? Please contact me for pricing and a reserved listing. I also offer a 20" sterling ball chain, as well as sterling cable chains in any length."

Found at PunkyJane's Etsy shop.