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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. List of defunct department stores of the United States

    en.wikipedia.org/wiki/List_of_defunct_department...

    Timeline of former nameplates merging into Macy's. Many United States department store chains and local department stores, some with long and proud histories, went out of business or lost their identities between 1986 and 2006 as the result of a complex series of corporate mergers and acquisitions that involved Federated Department Stores and The May Department Stores Company with many stores ...

  4. Silicon carbide - Wikipedia

    en.wikipedia.org/wiki/Silicon_carbide

    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 2.69 (compared to 2.42 for diamond).

  5. Signet Jewelers - Wikipedia

    en.wikipedia.org/wiki/Signet_Jewelers

    Signet Jewelers Ltd. (Ratner Group 1949–1993 then Signet Group plc to September 2008) is, as of 2015, the world's largest retailer of diamond jewellery. [1] The company is domiciled in Bermuda and headquartered in Akron, Ohio , and is listed on the New York Stock Exchange .

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewelry or other adornments.

  7. Jewellery - Wikipedia

    en.wikipedia.org/wiki/Jewellery

    Gold and gemstone contemporary jewellery design Male hand with modern silver rings, one with a tribal motif. Most modern commercial jewellery continues traditional forms and styles, but designers such as Georg Jensen have widened the concept of wearable art.

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