Gemstones have long been cherished for their beauty, rarity, and mystical properties. As we move further into the 21st ...

A new report from coloured gemstones miner Gemfields on the emerald, ruby and sapphire markets “… serves as a reminder of how ...

Narrator: High-quality black opal can cost over $10,000 per carat, making it one of the world's most expensive gemstones. But mining black opal isn't easy. After investing tens of thousands of ...