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Scientifically accurate
Great gift for a science teacher, researcher, or student
Beautiful and inspirational
Non-tarnishing steel chain
Represents love, joy, and learning
Description Love, joy, and learning...does it get any better than that? This beautiful neurotransmitter necklace includes dopamine, serotonin, and acetylcholine. It's the perfect scientific symbol of a balanced, happy life. The pendants are made from lead-free, nickel-free zinc alloy, separated by non-tarnishing steel beads. They are hand-strung on an 18 inch non-tarnishing steel snake chain.