These striking Comfort Fit rings are made from a high grade cobalt-free Tungsten Carbide. It combines the beautiful shiny color of the Tungsten Carbide with a 2 mm wide band of cool 925 Sterling Silver inlaid into the center of the band. This ring can be worn as a Wedding Band or Promise Ring. Tungsten Carbide is the newest and strongest metal to be used in jewelry, ideal for men and women who are tired of rings that scratch easily. Get this ring for the love that will be shown in the unending circle of this beautiful ring.