This beautiful serotonin molecule necklace symbolizes happiness, optimism, and satisfaction, inspired by the neurotransmitter that regulates these emotions. Combined with mustard seeds representing growth and faith, it makes a thoughtful gift for anyone you wish joy. Crafted from hypoallergenic S925 sterling silver, the necklace is lead-free, nickel-free, and safe for sensitive skin, ensuring it won’t tarnish or irritate. The pendant measures 1.1 x 0.75 inches (28mm x 19mm), with an 18-inch chain plus a 2-inch extension for adjustable wear. Perfect for science lovers, teachers, graduates, or those facing depression or anxiety, this meaningful piece comes elegantly packaged, ready for gifting. Your satisfaction is our priority—contact us anytime for assistance. This necklace is more than jewelry; it’s a heartfelt wish for happiness.