This pendant piece is 3/4″ x 5/8″. The chain length is adjustable and can be worn at 17.0″ or 18.1/2″. Silver chain. Materials: 14k gold-fill (14k yellow gold over brass core/no nickel) and sterling silver (.925). All materials are hypoallergenic. This necklace is handmade in the California and New York production studios.