First, Find the World’s Biggest Diamonds. Then Don’t Break Them.

  • Breakage is constant battle for operators of prized mines
  • Lucara broke a third off biggest diamond found in a century

A black-and-yellow dump truck rumbles up from a giant pit in the mountains of southern Africa, carrying a load of freshly blasted slate-gray rock from the Letseng mine. With luck it will contain a golf-ball sized diamond worth perhaps $20 million. 

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