Johannesburg - Petra Diamonds reported a 55% jump in third-quarter revenue, helped by the sale of a 29.6 carat blue diamond and strong rough diamond prices.
The diamond miner said third-quarter production rose 15% to 743 424 carats, driven by a 34% jump in production at its Finsch mine in South Africa.
Revenue for the quarter ended March 31 rose to $163.9m.
Petra has five producing mines in South Africa and one in Tanzania.