Worries over tension between Russia and the West, a fresh wave of political uncertainty in Greece, and a weaker dollar helped push the precious metal through key chart levels.
The coal miner, which emerged from bankruptcy only a year ago, had warned earlier this month it might have to make “substantial” job cuts at those facilities.
The market for coloured gemstones is on fire, with pink diamonds, rubies and sapphires achieving record prices. This infographic sheds some light on the situation.