The Dublin 8mm beveled Gold tungsten ring comes with comfort fit. The Dublin is a Tungsten Carbide Ring with celtic design.
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.
Looking for a black style, try visiting Forever Metals 9mm Dublin black infinity rings.