History of Diamond Grading in Australia

Blogs & News

Explore DCLA’s legacy as Australia’s leading diamond authority. Learn our history, meet the founders, and discover our unmatched grading expertise.

Revenue Slump as Petra Defers Sales

Petra reported a revenue slump for Q1 2025 after deferring the sale of almost all its South[…]

Collection of Blue Diamonds to Fetch Over $70M

Sotheby’s will sell a group of eight fancy-blue diamonds from De Beers across its global Magnificent Jewels[…]

Petra Diamonds in Partnership Deal With Stargems on White And Blue Diamonds

Petra Diamonds Limited has sold a 342.92 carat Type IIa white diamond and an 18.30 carat Type[…]

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[…]

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 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,[…]

Petra Diamonds Cullinan Diamond Mine
Petra Diamonds shares fall on debt for equity deal

Petra Diamonds has abandoned plans to sell the business in favour of a debt-for-equity restructuring, it said[…]

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