8 mm Matte Gold Edge Gordon RingThis 8 mm two tone matte black ion plated band features a yellow gold ion plated step edge design. This scratch resistant ring is highly durable and made to last a lifetime. Tungsten carbide is considered to be the hardest and most scratch resistant metal known to man. Made of roughly about 80% tungsten and 20% carbon, it's not only extremely durable and substantial in weight, it's also hypoallergenic. Tungsten wedding bands are truly a perfect match