25.5 Carat Blue Diamond Found in South Africa

A 25.5 ct. blue diamond was recovered by Petra Diamonds Limited at the Cullinan mine in South Africa.

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This isn’t the first blue stone the company has unearthed. In 2009, it found a 26.6 ct. rough that would become the 7 ct. Star of Josephine diamond that sold for more than $9 million at Sotheby’s. Petra Diamonds also set a record in December 2011 when it sold a 4.8 ct. piece of blue rough from the same mine for $1.45 million—more than $300,000 per carat.

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