Johannesburg: Struggling gem producer Petra Diamonds Ltd. found five blue stones, typically among the most valuable in the world, at its flagship mine in South
Johannesburg: Petra Diamonds said revenue leapt 48 percent in the first fiscal half because of steady demand following a stabilization in the rough market. Sales
Johannesburg: Petra Diamonds recovered a 138.57-carat, D-color, type IIa rough diamond, the latest in a string of large stones found at its Cullinan mine in
London: Petra Diamonds Ltd. sold an exceptional 232.08-carat white diamond that was recovered from the Cullinan mine in South Africa in September to Diacore for
Johannesburg: Petra Diamonds will shortly start the viewing process for the sale of the exceptional 122.52-carat blue diamond that it recovered in June at the
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