The black & gold virga posts are 1.1/2″ long by 1/16″. Materials: 14k gold or rose gold-fill (14k gold over brass core/no nickel) and oxidized sterling silver (.925). 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.