Petra Diamonds
LSE-listed Petra Diamonds announced on Wednesday that it has recovered a 138.57 carat Type IIa white diamond at its Cullinan mine in South Africa.

Petra Diamonds says the 138.57 carat Type IIa, D colour diamond, which is most notable for its high clarity, will be offered for sale as part of Petra’s next sales process in Johannesburg in late August.

The 138.57 carat white diamond recovered at the Cullinan mine
The 138.57 carat white diamond recovered at the Cullinan mine

In June, Petra Diamonds recovered a 121.26 carat Type II white diamond at the same mine and later sold it to a joint venture comprising Nemesis International and Golden Yellow Diamonds, two leading diamond manufacturers who specialise in large diamonds.

What makes Type II diamonds so unique is that they have no measurable nitrogen impurities, meaning they are often of top quality in terms of colour and clarity.

The Cullinan mine has produced over 800 white diamonds weighing more than 100 carats; 140 white stones weighing more than 200 carats; with around a quarter of all of its white diamonds weighing more than 400 carats.

Cullinan mine is also most notably known as the home of the world’s largest rough gem – the Cullinan diamond found in 1905. The 3.106 carat diamond was split into two to adorn the two pieces found in the Crown Jewels of Her Majesty the Queen of England.

Many of the world’s most famous diamonds herald from Cullinan, and it continues to produce world-class diamonds under Petra’s stewardship.