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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.
The World Federation of Diamond Bourses, founded in 1947, [1] was created to provide bourses trading in rough and polished diamonds and precious stones with a common set of trading practices. It is composed of 27 [ 2 ] member diamond bourses.
The LKI system of controls was instituted before the existence of this UN Resolution, and received special commendation from the UN for its contribution to stemming the flow of conflict diamonds. All of LKI's rough diamond buyers are required to sign and abide by a written code of ethical diamond trading conduct as a condition of continued ...
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 ( NDTC ).
In 2014, the Leverhulme Centre for the Study of Value, based at the University of Manchester, published a report authored by Sarah Bracking and Khadija Sharife, identifying over US$3.3 billion in price fixing within the South African rough diamond trade from 2004 to 2012, leading to an estimated deficit in tax paid of ZAR 1 billion per year.
In 2012, Alrosa signed a long-term agreement for the supply of rough diamonds with Belgium's Laurelton Diamondsa Inc., a subsidiary of Tiffany & Co. [53] According to the terms of the three-year trade agreement Tiffany & Co. can annually purchase rough diamonds worth at least 60 million U.S. dollars. [54] [55]
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