Petra finds “exceptional” 122.52 carat blue diamond in Cullinan mine
LONDON (Reuters) – Petra Diamonds Ltd said it had recovered an “exceptional” 122.52 carat blue diamond at its Cullinan mine in South Africa, just months after it sold a 29.6 carat blue diamond from the same mine for more than $25 million. “The rarity of a blue diamond of this magnitude sets it apart as a truly significant find,” the company … Read more