Two exceptional gem-quality stones recovered from Koffiefontein mine

"...Petra Diamonds Ltd said it has recovered two further exceptional stones weighing 135.6 and 74.7 carats from the Koffiefontein mine in South Africa, adding it expects to realise a significant value by selling the stones, which are gem quality. The company said it expects to put about 9,000 carats on sale in early September and given the average value of 367 usd per carat achieved in the last tender, it hopes to realise substantial revenues at the September tender..."
Courtesy - forbes.com

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