These tri-toned circle post earrings are 1/2″ long by 1/2″ at their widest point. Materials: 14k gold or rose gold-fill (14k gold over brass core/no nickel), oxidized silver and sterling silver (.925). Click the drop-down menu to choose your desired metal combination. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. All materials are hypoallergenic. These earrings are handmade in our California and New York production studios.