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2. Tungsten carbide - Wikipedia

   en.wikipedia.org/wiki/Tungsten_carbide

   Tungsten carbide (chemical formula: WC) is a 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 through sintering [7] for use in industrial machinery, engineering facilities, [8] molding blocks, [9] cutting tools, chisels, abrasives, armor ...

3. Tungsten - Wikipedia

   en.wikipedia.org/wiki/Tungsten

   The jewelry industry makes rings of sintered tungsten carbide, tungsten carbide/metal composites, and also metallic tungsten. [78] WC/metal composite rings use nickel as the metal matrix in place of cobalt because it takes a higher luster when polished. Sometimes manufacturers or retailers refer to tungsten carbide as a metal, but it is a ...

4. Moissanite - Wikipedia

   en.wikipedia.org/wiki/Moissanite

   A moissanite engagement ring Moissanite: emerald cut. Moissanite was introduced to the jewelry market as a diamond alternative in 1998 after Charles & Colvard (formerly known as C3 Inc.) received patents to create and market lab-grown silicon carbide gemstones, becoming the first firm to do so. By 2018 all patents on the original process world ...

5. Category:Tungsten compounds - Wikipedia

   en.wikipedia.org/wiki/Category:Tungsten_compounds

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6. Diamond - Wikipedia

   en.wikipedia.org/wiki/Diamond

   Gem-cut synthetic silicon carbide set in a ring. A diamond simulant is a non-diamond material that is used to simulate the appearance of a diamond, and may be referred to as diamante. Cubic zirconia is the most common. The gemstone moissanite (silicon carbide) can be treated as a diamond simulant, though more costly to produce than cubic ...

7. Eternity ring - Wikipedia

   en.wikipedia.org/wiki/Eternity_ring

   Eternity ring. An eternity ring, also known as an infinity ring, is a woman's ring [1] comprising a band of precious metal (usually gold) set with a continuous line of identically cut gemstones (usually diamonds) [2] to symbolize never-ending love, usually given by a spouse to their wife on the occasion of a significant anniversary, [citation needed] typically after five years of marriage.