South Africa's Petra Diamonds has found a blue rough diamond at Cullinan mine, a 39.34-carat, type IIb said to be of exceptional quality due to both its color and clarity. Take a look.
South Africa's Petra Diamonds has found a blue rough diamond at Cullinan mine, a 39.34-carat, type IIb said to be of exceptional quality due to both its color and clarity. Take a look.
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