Tungsten carbide (WC) is an inorganic chemical compound (specifically， a carbide) containing equal parts of tungsten and carbon atoms. In its most basic form， tungsten carbide is a fine gray powder， but it can be pressed and formed into shapes for use in industrial machinery， cutting tools， abrasives， other tools and instruments， and jewelry.
Tungsten carbide is approximately three times stiffer than steel， with a Young's modulus of approximately 550 GPa， and is much denser than steel or titanium. It is comparable with corundum (a-Al2O3) or sapphire in hardness and can only be polished and finished with abrasives of superior hardness such as cubic boron nitride and diamond， in the form of powder， wheels， and compounds.
Tungsten Carbide Ring Facts:
* 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 and shine longer than any ring on the market.
* Tungsten rings have been referred to as the "Permanently Polished Rings".
* Tungsten rings will NOT bend.
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Inscription Meaning (for new Ring Bearers!)
The words of the ring-inscription are in Black Speech， a language devised by Sauron and used in the land of Mordor. The inscription reflects the One Ring's power to control the other Rings of Power. The writing uses Elvish letters (tengwar)， in a mode adapted to the Black Speech.
Normally the One Ring appeared perfectly plain and featureless， but when heated its inscription appeared in fiery letters. A drawing of the inscription and a translation provided by Gandalf appears in Book I， Chapter 2 of The Fellowship of the Ring， "The Shadow of the Past".
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Gandalf speaks the words in Black Speech in Book II， Chapter 2， "The Council of Elrond":
Ash nazg durbatulûk， ash nazg gimbatul，
Ash nazg thrakatulûk agh burzum-ishi krimpatul.
Translated， the words mean:
One ring to rule them all， one ring to find them，
One ring to bring them all and in the darkness bind them.
When Isildur cut the Ring from Sauron's hand， it was burning hot， so the letters were legible. Isildur was able to transcribe the inscription before it faded as the Ring cooled. This transcription survived in a document Isildur left in Gondor before marching north to the Gladden Fields， where he was killed and the Ring lost.
Gandalf learned of the Ring's inscription when he read Isildur's account. When Gandalf subsequently heated the ring that Bilbo Baggins had left to Frodo， the inscription reappeared. The wizard then had no doubt that Frodo's ring was the One Ring. When Gandalf recited the inscription in Black Speech at the Council of Elrond， everyone trembled.