History of Diamond Grading in Australia

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Petra Diamonds finds 342-carat rough at Cullinan mine

South Africa’s Petra Diamonds has recovered a 342.92-carat Type IIa white rough at its iconic Cullinan mine.[…]

Blue rough diamond fetches $40 million

Petra Diamonds Ltd. sold a 39.3-carat blue gem for more than $40 million, making it one of[…]

Petra puts “exceptional” 39-carat blue diamond up for sale

South Africa’s Petra Diamonds has put a 39.34 carat Type IIb gem recovered at its iconic Cullinan[…]

39.34 carat blue diamond recovered
Petra finds 39-carat blue diamond at Cullinan mine

South Africa’s Petra Diamonds has found yet another big rock at its iconic Cullinan mine, a 39.34[…]

299.3-carat, type 11a, white gem-quality diamond
Petra sells 299 carat diamond for $12.18 million

Petra Diamonds has sold a 299.3 carat diamond recovered in January at its iconic Cullinan mine, in[…]

Petra Diamond’s Finsch mine in South Africa
Petra Diamonds’ investors back restructuring

Struggling Petra Diamonds (LON: PDL) said on Wednesday its investors have approved plans to restructure the business,[…]

Botswana Diamonds
Botswana Diamonds acquires Sekaka from embattled Petra

Botswana Diamonds (LON:BOD) said on Monday it had completed the acquisition of Sekaka, the exploration vehicle that[…]

Petra De Beers
De Beers Buys Petra Blue Diamonds for $40M

De Beers has purchased five rough blue diamonds from Petra Diamonds for more than $40 million in[…]

rare blue diamonds
Rare Rough Blue Diamonds

Recovered from the famous Cullinan Mine in South Africa, these blue diamonds are among the world’s most[…]

A 20.08-carat Type IIb blue diamond recovered at Cullinan.
Petra to sell blue diamonds recovered at Cullinan

Petra Diamonds (LON: PDL) announced the launching of a special tender process for the Letlapa Tala Collection,[…]

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