The interlocking hoop necklace’s pendant piece is 1/2” x 3/4”. The chain length is adjustable and can be worn at 17.1/2″ and 19.0″. Materials: 14k gold-fill (14k gold over brass core/no nickel), black (oxidized) sterling silver (.925). There are two versions of this necklace; one available with rose gold pendant and chain. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. All materials are hypoallergenic. This necklace is handmade in the California and New York production studios.