PASSINO | Black Tungsten Ring with Rose Gold Edges and Black CZBlack Tungsten Ring with Rose Gold Edges and Black Round CZ 8MM This Ring is made of high grade tungsten carbide which provides excellent durability. Black Tungsten Wedding Ring with Rose Gold Edges and Round Cut Black CZ at the Middle of the Ring. Ring Measures 8mm in width for Men. Tungsten carbide rings are extremely durable and won't scratch or fade. This Ring is made of high grade tungsten carbide which provides excellent durability. It is cobalt