Kana black tungsten carbide rings in an extra wide 12mm width for men. The Kana is a best-selling tungsten ring though Forever Metals brand wedding bands.
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.
Kana black statement rings can be found in a smaller width for a spouse in 6mm Kana black fashion women’s tungsten rings.