Diagem recovers large diamonds including a gem-quality 20.9 carat diamond


"...The 20.9 carat stone is the largest stone ever documented at Collier-04. Fourteen of the stones are relatively good quality diamonds except for the 17.3 carat stone which is a boart or poor quality aggregate. These stones and the additional diamonds each weighing in excess of one carat represent 8.4% in carat weight of the diamonds recovered since the start of the commissioning of the pilot plant in March 2007..."
Courtesy - earthtimes.org

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