De Beers Group is the world's leading diamond company, with expertise in diamond exploration, mining, grading, marketing and retail.

How does De Beers control the diamond market?

De Beers was able to control not only who was allowed to buy, but how much. They could determine how many diamonds they wanted to sell, and they set the price. Sightholders were kept in line by De Beers: they had to operate under rigid rules. ... Sightholders either agreed or were effectively shut out of the market.

Does De Beers sell blood diamonds?

Blood Diamonds. ... In 2000, De Beers controlled around 65 percent of all diamond production, while in 2001 De Beers marketed two-thirds of all the rough diamonds in the world and produced nearly half of the world's supply of diamonds from their mine.