Jasper Men’s Tungsten Ring is a heavy ring with a center groove circling the ring. Along the center groove there is vertical grooves adding definition to the ring. Jasper sold in comfort fit only.
The Metal that is used is a Nickel Binder that is higher in quality in comparison to cobalt. Cobalt is a inferior binding agent which may darken the color of the ring over time. Cobalt is most common in lower cost tungsten rings. This is due to the rings being mass produced in countries other than the United States.