MATLAL Beveled Black Ceramic Wedding Band with Green Carbon Fiber Inlay - 8 mm. This hard to find wedding band style has the look of Black Tungsten Rings but, is actually a combination of high tech black ceramic with the cool look of carbon fiber. This comfort-fit band is 8 mm wide and has beveled edges. The beautiful emerald green color carbon fiber is extremely rare and hard to find. This is the perfect wedding band to represent your love. Black Ceramic does not scratch or lose its color, like black tungsten does. Note: carbon fiber is protected by a tough clear resin, which is not as scratch resistant as tungsten or ceramic, so it can scratch.