Tungsten rings are the same as diamonds, diamond tools for cutting and polishing. Tungsten carbide rings is not as easy as usual, jewelry processing, because of its hardness is too high. Mohs hardness in between 8.9~9.1, 18K gold 10 times, titanium 4 times. In our daily lives don't wear out. Tungsten rings are required to undergo more than 30 multi-channel process hot fire, temperatures up to 1300 degrees Celsius, manual grinding, polishing, surface to a mirror shine. Each qualified tungsten steel jewelry laser printing, the qualifying mark.