Simple and striking, this handsome wedding band is a shining symbol of your marriage commitment. Fashioned in elegant and durable black cobalt, this 6. 0mm-wide design features a satin-finished center band and grooved and polished edges. Harder than platinum and virtually scratch resistant, cobalt is a durable choice for the active man. Buffed to a brilliant shine, the inside of this ring is rounded for a comfortable fit. Custom-made to fit his ring size. Cobalt rings cannot be resized after purchase.