Pewter Serotonin Molecule Cast Necklace, Serotonin necklace sterling silver chain Gift packaged with informational card *****Orders ship out within 24 hours of receiving payment via priority mail**** Chain is stainless steel rolo chain with a necklace length of 17 inches Informational card accompanies packaging Serotonin Molecule is cast in pewter. Solid pewter- no plating is involved on the molecule. the chain is high quality stainless stell Elegant black glass topped gift box with a velvet insert that can be kept forever.