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Serotonin is the neurotransmitter molecule that induces feelings of happiness, satisfaction, and relaxation. SSRI medications, such as Prozac, work by increasing levels of serotonin.

Based on the molecular shape of serotonin, the keychain has a elegant, modern shape and symbolizes the contented feeling of happiness so lacking in our modern, fractured, frenzied lives. It is both a meaningful personal symbol for happiness and a thoughtful gift for someone you wish happiness.

The molecule design is made of quality, recycled/reclaimed sterling silver, is 1.5 inches wide, and is attached to a high quality sterling silver split ring keyring that is about 1 in diameter.

Each is loving made, packaged in a recycled gift box perfect for gift-giving, and includes an informational tag about serotonin.

Customer comments about this keychain:

“Super gorgeous and everything I expected! Thanks so much!”

“Great craftsmanship!”

“This keychain was one of the most awesome gifts I have ever purchased. My girl actually took it off the ring and uses it as a necklace as well as a keychain. Amazing product”

“So lovely! Thank you, Raven, for such a unique and special product. Beautiful packaging and super fast shipping. Just perfect :)”

“Love it, can carry it with me everyday as a reminder. Thanks for making such a great item Raven.”

“Just love it! Simple and clever! Got so many compliments! Talented artist!”


I'm scientist-turned-artist Raven Hanna, Ph.D., the Molecular Muse of Made With Molecules. I hand-make original, high quality jewelry and use Earth-friendly and people-friendly business practices. I live and work in a solar-powered sugarcane shack on the flank of an active volcano in Hawaii, and I donate a percentage of profits to environmental and science education nonprofit organizations. Please take a look at other molecular jewelry offerings in my shop. http://molecularmuse.etsy.com

Frequently asked questions about molecularmuse

I can make custom molecule jewelry, if the molecule will work in my style. Prices start around $150 and the process usually takes 4-6 weeks.
Most of my jewelry is high quality, solid sterling silver. It is specially formulated to resist tarnish, but, like all silver, will tarnish. You can minimize oxidation by storing silver jewelry in a bag or box away from air and heat. Regularly wearing the jewelry can help rub off tarnish. I allow the silver serotonin necklace I wear daily to develop a bit of a patina. It's OK to wear your sterling silver jewelry in the shower.
Your order will come packaged in a cute, recycled paper gift box with a little card explaining what the molecule represents. I tie it with a ribbon, making a pretty package for gifting - no addition wrapping required.

If you are shipping directly to the gift recipient, I'm happy to include a card with your gift message. Just let me know when you order.

Serotonin Keychain - gift of happiness - in solid sterling silver