This necklace is handcrafted featuring a shiny silver Dopamine molecule charm. Attached to beautiful Sterling silver cable chain of your length choice with secure spring ring clasp. Dopamine is a neurotransmitter in the brain that helps control the brain's reward and pleasure centers. The charm is made from a zinc alloy metal which is lead and nickel free. This necklace is handmade with love in the USA using the highest quality materials for a truly unique gift that the recipient will treasure for years. ❀ Gift packaging included with every order!! ❀