This ring is cobalt free tungsten carbide. This very versatile ring has been sold as a promise ring, a wedding ring and also is worn as a fashion ring. The crosses are gold-plated and encircle the ring. Comfort fit tungsten rings usually run 1/2 size larger, it is suggested you buy a half size smaller than your standard ring size. We recommend having your finger measured for a comfort fit ring at your local jewelry store for an accurate fit. All of our tungsten rings come with a two year warranty.