The pendant piece on this mini black and gold circle necklace measures 1/2″ by 1/2″. The chain is adjustable, and can be worn at 17.0″ or 18.1/2″ in length. Materials: 14k gold-fill or rose gold-fill (14k gold over brass core/no nickel) and oxidized sterling silver (.925). All materials are hypoallergenic. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish.This necklace was designed in San Francisco and is handmade in our Upstate New York production studio.