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  2. Carat (mass) - Wikipedia

    en.wikipedia.org/wiki/Carat_(mass)

    The carat (ct) is a unit of mass equal to 200 mg (0.00705 oz; 0.00643 ozt), which is used for measuring gemstones and pearls. The current definition, sometimes known as the metric carat , was adopted in 1907 at the Fourth General Conference on Weights and Measures , [ 1 ] [ 2 ] and soon afterwards in many countries around the world.

  3. Diamond (gemstone) - Wikipedia

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

    In the wholesale trade of gem diamonds, carat is often used in denominating lots of diamonds for sale. For example, a buyer may place an order for 100 carats (20 g) of 0.5-carat (100 mg), D–F, VS2-SI1, excellent cut diamonds, indicating a wish to purchase 200 diamonds (100 carats (20 g) total mass) of those approximate characteristics.

  4. FURA Gems - Wikipedia

    en.wikipedia.org/wiki/FURA_Gems

    FURA Gems was established in 2017 by Dev Shetty with a focus on increasing the supply of ethically sourced color gemstones with traceability of the mine origin to end-consumers. [ 5 ] [ 1 ] The company's name is derived from an ancient Colombian legend about Fura and Tena, two human figures created by the Muisca god Are.

  5. 18 Most Expensive Gemstones in the World - AOL

    www.aol.com/finance/18-most-expensive-gemstones...

    A pure, 1-carat diamond can easily fetch a price in the six digits per gram. Prices can vary dramatically based on color, cut and other factors. Rob Lavinsky / Wikimedia Commons CC-BY-SA 3

  6. Diamond - Wikipedia

    en.wikipedia.org/wiki/Diamond

    Loose diamonds are also found along existing ... diamonds are cut and polished in preparation for sale as gemstones ... Approximately 130,000,000 carats (26,000 kg ...

  7. Gemstone - Wikipedia

    en.wikipedia.org/wiki/Gemstone

    The GIA system included a major innovation: the introduction of 10x magnification as the standard for grading clarity. Other gemstones are still graded using the naked eye (assuming 20/20 vision). [21] A mnemonic device, the "four Cs" (color, cut, clarity, and carats), has been introduced to help describe the factors used to grade a diamond ...

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