This is a one of a kind masterpiece for your neck. Materials: one 16in 925 Sterling Silver chain with one 1.3in wide by 1.3in tall GLOW IN THE DARK resin charm. This is a faux opal/stone look made from clay and rainbow shimmer. Colors are black and silver through the faux stone. It is encased in clear resin floating around iridescent sparkles. It is durable and ready for a night out on the town, dancing at the club or just a simple lunch with the family. This piece is a show stopper!