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[…]

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.[…]

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[…]

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,[…]

blue diamonds Cullinan
Petra Diamonds recovers five rare large high-quality blue diamonds at Cullinan Mine

South Africa’s Petra Diamonds, which put itself up for sale in June, announced on Wednesday it had[…]

Petra Blue Diamond
Petra Sells 20ct. Blue Diamond for $15M

The 20.08-carat blue Cullinan diamond.

Latest Comments

No comments to show.