Cobalt is a contemporary metal formulated to achieve a brilliant and white color very similar to platinum. This comfort fit ring is crafted of solid cobalt and has a grooved braided inlay for extra style. The band has a polished finished and a rounded edge, and is 9MM wide. Available in size 8 through 13 (whole and half sizes). Cobalt chrome is strong, corrosion resistant, hypoallergenic, highly scratch resistant, will not tarnish, oxide or change colors and is exceptionally comfortable to wear. Designed, engineered and manufactured in the USA.