Browse our selection of Cobalt Wedding Bands and Ceramic Wedding Bands. Cobalt Wedding Bands is made from a bio-friendly material often used in surgical equipment. This durable metal in naturally white without re-plating can be sized up to to ¼ size. Ceramic Couture Wedding Bands is made of a hi-tech space age material. This material is permanently polished, lightweight, colorfast, and heat resistant. We have a great selection of classic and designer bands in these up and coming alternative material bands.