6mm Cobalt Pipe Cut Satin Finish Band with Abalone Shell Inlay6mm Cobalt Pipe Cut Satin Finish Band with Abalone Shell Inlay Size: 10 (May be custom ordered in other sizes. Message us to place an order.) Cobalt boasts a beautiful, Platinum like color which goes throughout the ring. Cobalt rings will not chip or crack, making it great for diamonds and custom work. Cobalt rings are malleable up to a half size. Cobalt is a lightweight and hypoallergenic. In case of an emergency, cobalt rings can be removed with a