Petra Diamonds has sold a 299.3 carat rough diamond to Stargems DMCC for US$12.18 million, after recovering the diamond at its Cullinan mine in South Africa earlier this year. The exceptional white, type IIa, gem quality diamond fetched US$40701 per carat, exceeding the US$34386 per carat Petra achieved for the 424.89 carat Legacy of the Cullinan Diamond Mine in May 2019.
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