Rare blue diamond from Cullinan mine set to go on auction in July
A rare 39.34 carat Type IIb blue diamond recovered at Petra Diamonds'' Cullinan Diamond Mine is set to go on auction in July.
Rare blue diamond from Cullinan mine set to go on auction in July
A rare 39.34 carat Type IIb blue diamond recovered at Petra Diamonds'' Cullinan Diamond Mine is set to go on auction in July.