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  2. Moissanite - Wikipedia

    en.wikipedia.org/wiki/Moissanite

    Moissanite (/ ˈmɔɪsəˌnaɪt /) [ 5 ] is naturally occurring silicon carbide and its various crystalline polymorphs. It has the chemical formula SiC and is a rare mineral, discovered by the French chemist Henri Moissan in 1893. Silicon carbide or moissanite is useful for commercial and industrial applications due to its hardness, optical ...

  3. Gemological Institute of America - Wikipedia

    en.wikipedia.org/wiki/Gemological_Institute_of...

    Gemological Institute of America (GIA) The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [1] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the ...

  4. LeVeque Tower - Wikipedia

    en.wikipedia.org/wiki/LeVeque_Tower

    The LeVeque Tower is a 47-story skyscraper in Downtown Columbus, Ohio. At 555 feet 5 inches (169.29 m) it was the tallest building in the city from its completion in 1927 to 1974, and remains the second-tallest today. Designed by C. Howard Crane, the 353,768-square-foot (32,866.1 m 2) Art Deco skyscraper was opened as the American Insurance ...

  5. Polaris Fashion Place - Wikipedia

    en.wikipedia.org/wiki/Polaris_Fashion_Place

    Polaris Fashion Placeis a two level shopping malland surrounding retail plaza serving Columbus, Ohio, United States. The mall, owned locally by Washington Prime Group, is located off Interstate 71on Polaris Parkway in Delaware Countyjust to the north of the boundary between Delaware and Franklin County. The mall features five anchor stores ...

  6. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    A collection of gemstone pebbles made by tumbling the rough stones, except the ruby and tourmaline, with abrasive grit inside a rotating barrel. The largest pebble here is 40 mm (1.6 in) long. The traditional classification in the West, which goes back to the ancient Greeks, begins with a distinction between precious and semi-precious; similar ...

  7. Gemstone industry in Greenland - Wikipedia

    en.wikipedia.org/wiki/Gemstone_industry_in_Greenland

    Gemstone industry in Greenland. Gemstones have been found in Greenland, including diamond, ruby, sapphire, kornerupine, tugtupite, lapis lazuli, amazonite, peridot, quartz, spinel, topaz, and tourmaline. [1] Most of Greenland's ruby and sapphire occurrences are located near the village of Fiskenaesset/ Qeqertarsuatsiaat on the southwest coast ...

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