South African Miner Petra Diamonds Ltd reported 20 percent higher core earnings for the first half, helped by production at its recently purchased Finsch mine, Reuters reported.
Adjusted earnings before interest, taxes, depreciation and amortisation rose to $32.6 million for the six months to Dec. 31 from $27.1 million a year earlier, the report said.
Petra, which has seven operating mines in South Africa and one in Tanzania, said revenue grew 63 percent to $151.7 million.
The rough diamond market is expected to remain stable in the second half, the company said.
Earlier this month, the world's biggest diamond producer, De Beers, said a more positive outlook in China and India would boost sales of diamond jewellery in 2013, said the Reuters report.
Petra said last month that production rose 31 percent to 1.25 million carats for the first half, mainly due to the inclusion of output from the Finsch mine. But it lowered its full-year production target by about 7 percent, citing uneven quality, particularly at its Finsch and Cullinan mines in South Africa, according to the report.
Shares in Petra closed at 115.8 pence on the London Stock Exchange on Friday. They have lost about 25 percent of their value in the past year, the Reuters report said.