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2. 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 ...

3. Engagement ring - Wikipedia

   en.wikipedia.org/wiki/Engagement_ring

   Engagement ring. Two engagement rings, as traditionally worn on the ring finger of the left hand. An engagement ring, also known as a betrothal ring, is a ring indicating that the person wearing it is engaged to be married, especially in Western cultures. A ring is presented as an engagement gift by a partner to their prospective spouse when ...

4. Jewellery - Wikipedia

   en.wikipedia.org/wiki/Jewellery

   A diamond solitaire engagement ring. Now popular in engagement rings, this usage dates back to the marriage of Maximilian I to Mary of Burgundy in 1477. [15] A popular style is the diamond solitaire, which features a single large diamond mounted prominently. [16] Within solitaire, there are three categories in which a ring can be classified ...

5. Silicon carbide - Wikipedia

   en.wikipedia.org/wiki/Silicon_carbide

   A moissanite engagement ring As a gemstone used in jewelry , silicon carbide is called "synthetic moissanite" or just "moissanite" after the mineral name. Moissanite is similar to diamond in several important respects: it is transparent and hard (9–9.5 on the Mohs scale , compared to 10 for diamond), with a refractive index between 2.65 and 2 ...

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. Cubic zirconia - Wikipedia

   en.wikipedia.org/wiki/Cubic_zirconia

   2.15–2.18. Cubic zirconia (abbreviated CZ) is the cubic crystalline form of zirconium dioxide (ZrO 2). The synthesized material is hard and usually colorless, but may be made in a variety of different colors. It should not be confused with zircon, which is a zirconium silicate (ZrSiO 4). It is sometimes erroneously called cubic zirconium.