The Richest Diamond Mines in the World

08/17/2011 01:00 pm ET | Updated Oct 17, 2011
  • Paul Ausick 24/7 Wall St.

The global diamond mining industry may be one of the world’s best-kept secrets. Next to anything else having to do with diamonds, that is. The four largest diamond miners in the world are De Beers Group, Alrosa, Rio Tinto and BHP Billiton. De Beers is privately held, having delisted from the Johannesburg stock exchange in 2001. Alrosa is owned by the Russian government.

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