Who produces most diamonds?

Biggest diamond producers: A model's best friend.

Since 2000, the governments of over 75 countries have signed up to the Kimberley Process, which certifies that diamonds produced for foreign markets have not helped to fund violence. The Process has its critics, who point out that diamonds from the huge Marange mine in Zimbabwe have just been cleared for sale, despite much evidence of government-sponsored violence there.

via www.economist.com