" About Tungsten CarbideTungsten Carbide is the hardest of all metals. It is polished to a perfect mirror finish using diamonds, and unlike other metals, it will retain the exact polish for decades to come. In fact, the only way to scratch a tungsten ring is with a diamond. No other material will affect it. Tungsten is about 10 Times harder than 18K Gold, 5 Times harder than tool steel, and 4 Times harder than titanium. Reflection with a sparkling luster. Mirror polished finish and corrosion resistance.All Our rings are engraved ""TUNGSTEN CARBIDE"" for authenticity.This ring polish is nearly impossible to damage, thats why you can use it anywhere, anytime.This is an original and genuine Tungsten product, perfect quality. No risk, all of our rings are COMFORT FIT and COBALT FREE. Silver Tungsten Ring 8mm CZ Inlay Ring *Features*