The long tri-toned virga posts measure 2 3/8″ by 1/16″. Materials: 14k gold-fill (14k gold over brass core/no nickel), sterling silver (.925) and oxidized sterling silver. All materials are hypoallergenic. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. These earrings are designed in San Francisco and handmade in our Upstate New York production studio.