Petra Diamonds has found a 20.08 carat blue stone at its flagship mine in South Africa, offering some relief to a miner struggling with weak demand and a mountain of debt. The company said it ...
Improved production of large diamonds at the high-value Letšeng mine in Lesotho drove an increase in Gem Diamonds’ sales in 2017. Sales jumped 12% to $206.8 million for the year, the miner said Friday. While the ...