Cobalt’s battery-powered boom has turned to bust
A rally in the cobalt market used in EV batteries is turning into a rout, putting pressure on miners and offering tentative cost relief for...
Signet hits diamond trade with refusal to buy Russian gems
A move by Signet Jewelers, the owner of Kay Jewelers and Zales, will likely have ripple effects across the diamond industry.
iPad generation spurns diamonds
Diamond-mine owners like De Beers have been unable to prevent prices from dropping below where they were a decade ago, a sign the industry is...