500-carat diamond found at S. African mine

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(Petra Diamonds Ltd.) Petra Diamonds Chief Executive Johan Dippenaar holds a white diamond weighing 507.55 carats, which was excavated at the historic Cullinan mine in South Africa on Sept. 24, 2009.500-Carat Diamond Found at South African Mine

SEPTEMBER 29, 2009Petra Diamonds
Petra Diamonds Limited has announced the discovery of an important 507.55 carat white diamond at the Cullinan mine in South Africa.This spectacular gemstone was recovered on Thursday 24 September and is currently with experts for analysis. Initial examinations indicate that it is of exceptional colour and clarity, and most likely to be a Type II diamond.

The diamond was recovered alongside three other special white stones of similar colour and clarity in the same production run: another very large stone of 168.00 carats and two other stones of 58.50 and 53.30 carats.At 507 carats (just over 100 grams) the diamond, which has yet to be named, is considered to be amongst the top 20 largest high quality rough diamonds ever found worldwide and ranks alongside other illustrious diamonds recovered at the celebrated Cullinan mine.

Cullinan has a special place in the history of diamonds as the source of the world’s largest gem diamond ever recovered, the “Cullinan,” at 3,106 carats rough. It has also produced a further two of the world’s largest diamonds, the Golden Jubilee at 755 carats rough and the Centenary at 599 carats rough, and many other famous gems including the Taylor-Burton (69 carats polished).Johan Dippenaar, Petra’s Chief Executive Officer, commented on the find, “The Cullinan mine has again given the world a spectacularly beautiful and important diamond. Initial indications are that it is of exceptional colour and clarity, which suggest extraordinary potential for its polished yield. We now eagerly await the findings of the expert analysis.”

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