LASER ENGRAVING SERVICE 9MM Cobalt COMFORT FIT Polished / Satin Brush Brushed Finish Wedding Ring Band with Multi Beveled Beveling Edge for Men (Sizes 8 to 12) - Brilliant White Hypoallergenic Jewelry 4X Harder than Platinum, 5X Harder than Gold, and 7X Harder than Silver. Same Color as Brilliant Platinum Cobalt is the Ultimate Contemporary Metal. Perfect for those who love the color of Platinum or White Gold FREE GIFT-BOX with every order Hypoallergenic, scratch resistant and biocompatible. This metal will NOT cause ANY allergic reactions, or redness to the skin Cobalt... unlike Tungsten is shatter proof.