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The Diamond Trading Company (DTC) is the rough diamond sales and distribution arm of the De Beers Group. The DTC sorts, values and sells about 35% of the world’s rough diamonds by value. [1] The DTC has a combination of wholly owned and joint venture operations in South Africa (DBSSSA), Botswana (DTCB and DBGSS), and Namibia . [2]
This is a partial list of the largest non-synthetic diamonds with a rough stone (uncut) weight of over 200 carats (40 grams). [1] The list is not intended to be complete—e.g., the Cullinan (formerly Premier) mine alone has produced 135 diamonds larger than 200 carats since mining commenced.
In 2014, 100 Reporters published an article showing how the use of KP certificates had allowed for the publication to identify transfer pricing manipulation in South Africa's trade of rough diamond exports, [41] detailing "Most imported diamonds appear to be re-exported uncut and unpolished. While imports make up relatively small volume, or ...
The Namibia Diamond Trading Company (NDTC) is a 50/50 joint venture between the Republic of Namibia and the DTC; the mining and sorting arm of De Beers. Namibia is a known source for gem quality diamonds and is the fourth-largest exporter of nonfuel minerals in Africa. [ 1 ]
GSS sells about 90% of De Beers's rough diamonds, by value, and features wholly owned and joint venture operations in South Africa (De Beers Sightholder Sales South Africa), Botswana (DTCB), and Namibia (NDTC). They sort, value and sell 33% (2013) of the world's rough diamonds by value. [49]
Alrosa (Russian: АЛРОСА) is a Russian group of diamond mining companies that specialize in exploration, mining, manufacture, and sale of diamonds. The company leads the world in diamond mining by volume. [2] [3] Mining takes place in Western Yakutia, the Arkhangelsk region, and Africa. Alrosa is Russia's leading diamond mining and ...
In comparison, the Cullinan, discovered in 1905 in South Africa, weighed 621.4 g (3,106.75 carats). [5] [6] The Lesedi La Rona was mined using Large Diamond Recovery ("LDR") XRT machines, [4] and is the largest diamond recovered using machines for automated diamond sorting. [3] [7] It is estimated to be over 2.5 billion years old. [8]
The Cullinan Diamond is the largest gem-quality rough diamond ever found, [2] weighing 3,106 carats (621.20 g), discovered at the Premier No.2 mine in Cullinan, South Africa, on 26 January 1905. It was named after Thomas Cullinan, the owner of the mine. In April 1905, it was put on sale in London, but despite considerable interest, it was still ...
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