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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. Diamond (gemstone) - Wikipedia

    en.wikipedia.org/wiki/Diamond_(gemstone)

    The carat weight measures the mass of a diamond. One carat is defined as 200 milligrams (about 0.007 ounces avoirdupois). The point unit—equal to one one-hundredth of a carat (0.01 carat, or 2 mg)—is commonly used for diamonds of less than one carat. All else being equal, the price per carat increases with carat weight, since larger ...

  5. Public acceptance of diamond substitute lagging - AOL

    www.aol.com/2008/01/15/public-acceptance-of...

    Charles & Covard, makers of the best diamond substitute on the market, Moissanite, recently hired a brand marketing firm to figure out why the company's product hasn't gained more traction in the ...

  6. 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.

  7. Jewellery - Wikipedia

    en.wikipedia.org/wiki/Jewellery

    The British crown jewels contain the Cullinan Diamond, part of the largest gem-quality rough diamond ever found (1905), at 3,106.75 carats (621.35 g). 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]

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