SAMSON | Gold Tungsten Ring, Gold Off-Center Groove, DomedBrushed Yellow Gold & Faceted Black Ring with Off Center Groove at the Ring 8MM. This highly sought after style from our Black Wedding Bands Collection merely is captivating. This comfort fit ring can be worn as an engagement ring and Promise Ring by men as it is only available in 8mm width. Tungsten Carbide Rings are said to be classier, and stylish and the most important thing is the strength of the rings. As the metal is 10 times harder than gold,