These thin black & gold rings are available in sizes 5.0 - 11.5, including all half sizes. Materials: oxidized fine silver and 14k gold fill (14k over a brass core, no nickel), hypo-allergenic. The black (oxidized) components of our jewelry will wear over time and eventually achieve a beautiful antique-like finish. Each ring is sold individually. This ring is handmade in San Francisco, California.