Petra Diamonds recovers 25.5 carat blue diamond

(Source: Petra Diamonds)

Petra Diamonds, the diamond mining group, has announced the recovery of a high quality 25.5 carat blue diamond at its Cullinan mine in South Africa (release).

The 26.6 carat diamond recovered by Petra Diamonds known as the "Star of Josephine" sold for $9.49m in 2009.