This silver and gold double square necklace is adjustable, and can be worn at 16.1/2″ to 17.1/2″ in length. This pendant measures 11/16″ by 11/16″. Materials: 14k gold or rose gold-fill (14k gold over brass core/no nickel) and sterling silver (.925). All materials are hypoallergenic. This necklace was designed in San Francisco and is handmade in Colleen's Upstate New York production studio.