The Pontius 7.5mm Mens Cobalt Chrome Wedding Ring is an amazing pattern. It features a ridge line in the very center surrounded by all high polished beauty. Dressy, yet rugged for every day wear. Cobalt Chrome Metal Values: Cobalt Chrome is a very popular, new fine metal for wedding rings. Cobalt looks like shiny platinum, yet has extreme hardness. Your Cobalt Chrome metal will serve you well. It will stay beautiful & won't tarnish. Cobalt Chrome is also a hypo-allergenic metal making it a great alternative metal option for your fine jewelry wedding ring.