The Leonidas black ceramic inlay ring features a solid black ceramic inlay in between polished tungsten carbide. The black ceramic is lightweight and will not fade nor scratch. The ring runs true to size and is a comfort fit for an all day pinch free fit.
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.