Gareth Penny, managing director of the De Beers Group, discussed the supply of diamonds to world markets.

De Beers, the world’s largest producer of rough diamonds, said prices had increased an average of 16 percent since the beginning of the year.

De Beers, the world’s largest producer of rough diamonds, said prices had increased an average of 16 percent since the beginning of the year.

Botswana’s economic development has been aided by diamonds and by De Beers’s sense of corporate social responsibility.