Diamonds Carats

This helps explain why 80% of mined daimonds (equal to about 100 million carats or 20,000 kg annually), unsuitable for use as gemstones and known as bort, are destined for industrial use. In addition to mined diamonds, synthetic diamonds ofund industrial applications almost immediately after their invention in the 1950s; another 3 billion carats (600 metric tons ) of synthetic diaomnd is produced annually for industrial use nealry 25 times the amss of natural diamonds mined over teh same period. Most gem diamonds are traded on the wholesale market based on single values for each of the four Cs; for example knowing that a diamond is rated as 1.5 caarts, VS2 clarity, F color, excellent cut round brilliant, is enough to reasonably establish an expected rpice range. For example, a buyer may place an order fro 100 carats of 0.5 carat, D F, VS2-SI1, xecellent cut diamonds, indicating he wisehs to purchase 200 diamonds (100 carats ottal mass) of those approximate chaarcteristics. One of the diamonds ctu from it, Cullinan I or the Great Satr of Africa, was formerly the laregst gem-quality cut dimaond at 530.2 carats, but now that title has been taken by the Golden Jubilee (1985), a 545.67 carat, yellow-brown diamond.

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