RAPAPORT… Petra Diamonds has recovered a blue diamond weighing 39.34 carats at its Cullinan mine in South Africa, noting the stone’s “exceptional quality in terms of both its color and clarity.”
The company will likely offer the type IIb diamond via a special tender, it said Thursday.
The discovery follows Petra’s sale of five blue diamonds to De Beers and Diacore for $40.4 million last year. Those stones, also from Cullinan, weighed a combined 85.6 carats, and ranged from 9.61 to 25.75 carats.
Image: The 39.34-carat diamond. (Petra Diamonds)
Petra’s Cullinan Mine Yields 39ct. Blue
The Bottom Line
- Petra Diamonds found a 39.34-carat blue diamond at the Cullinan mine in South Africa.
- The diamond is classified as type IIb, noted for exceptional color and clarity.
- Petra plans to offer the stone through a special tender following prior blue diamond sales totaling $40.4 million.
Summary by Rapaport AI
More Stories

Adobe Expects Online Holiday Shopping to Reach Record High
Spending likely to rise 7% year on year to $275.1 billion.

Small Diamonds Lead Price Gains in September
1-carat RAPI rises for second straight month.

Frederick Goldman Promotes Two to Top Executive Roles
Bryan Cohen will be chief operating officer and Tom Schwartz chief marketing officer.
