| http://www.w3.org/ns/prov#value | - Hard Facts About Tungsten Carbide Rings: * Tungsten Rings are the most wear resistant rings available on the planet.* Tungsten is about 10 times harder than 18K Gold, 5 times harder than tool steel, and 4 times harder than titanium. * Tungsten measures between 8 and 9 on the Mohs hardness scale. (Diamonds are a 10 - the highest.)* Due to their extreme hardness, Tungsten Rings will hold their shape
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