De Beers Diamonds Slides

De Beers Diamonds - De Beers Diamonds Co DE BEERS DIAMONDS CO A DIAMOND IS FOREVER History Timeline 1871-Cecil Rhodes buys first diamond mine

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De Beers Diamonds Co DE BEERS DIAMONDS CO. A DIAMOND IS FOREVER
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History Timeline 1871 -Cecil Rhodes buys first diamond mine 1888 -Incorporates acquired mines into DeBeers Consolidated Mines, Ltd. 1893 -DeBeers is officially listed on the Johannesburg Stock Exchange Mid 1890’s -Diamond Syndicate formed (forerunner of Central Selling Organization (CSO))
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History Timeline 1902 & 1908 -Discover of mines in Pretoria and German South West Africa (Nambia) severely weaken DeBeers control of diamond market 1917 -Ernest Oppenheimer (E.O.) founds the Anglo- American Company 1920s -E.O. gains control of South West Africa mines 1925 -E.O. forms a new diamond syndicate
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History Timeline 1926 -E.O. buys seat on DeBeers’ board of directors 1929 -E.O. becomes chairman 1939 -DeBeers sets into place the selling and grading criteria the 4Cs: color, cut, clarity, and carat 1947 - A dvertising company N.Y. Ayer and Son coins the slogan “a diamond is forever”
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History Timeline 1960’s -DeBeers introduces jewelry tailored to special occasions such as the “eternity ring” for wedding anniversaries and the “sweet 16 pin” 1980’s -DeBeers introduces the tennis bracelet 1990-The DeBeers Group is split into De Beers Consolidated Mines Limited (De Beers Consolidated) and De Beers Centenary AG (Centenary) 1990’s -DeBeers comes under scrutiny for dealing in conflict diamonds
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History Timeline 1999 -DeBeers buys diamonds only from the CSO in order to ensure that it no longer purchases conflict diamonds 2001 -DeBeers introduces the right-hand ring, meant to symbolize self-sufficiency and independence for single women 2005 -DeBeers turns over over 15% of the company to Ponahalo Investment Holdings in order to be in compliance with South Africa’s Black Economic Empowerment mining charter.
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How It’s Made Diamonds are made completely out of crystallized carbon atoms They are made in the upper mantle of the earth by being heated and cooled over and over The immense pressure is caused by the 2200º F needed to produce a diamond The diamonds are created 90 miles below the earths surface and are brought up through volcanic pipes
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Mining Diamonds 2 Types - Pipe mining and Alluvial mining Pipe mining is when miners go deep next to volcanic pipes and take out large rocks containing many diamonds These rocks are then taken to a screening plant to be separated Alluvial mining is done on beaches and river beds The water is held back and the miners dig down to the level of earth where diamonds are found, this sand is also brought to a screening plant
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This note was uploaded on 09/08/2010 for the course ANTH 115 at San Jose State University .

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De Beers Diamonds - De Beers Diamonds Co DE BEERS DIAMONDS CO A DIAMOND IS FOREVER History Timeline 1871-Cecil Rhodes buys first diamond mine

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