Rubies and sapphires of exceptional provenance and signed jewels were among the top lots at Bonhams New York Fine Jewelry sale on Tuesday. This is to be expected at a Bonhams sale, as the auction ...

CAMBRIDGE, Mass. -- Researchers have uncovered strong evidence that the ancient Chinese used diamonds to grind and polish ceremonial stone burial axes as long as 6,000 years ago -– and incredibly, did ...

Diamonds are a girl’s best friend—especially when they’re attached to a stunning sapphire. Fans of both will get the chance to bid on this one-of-a-kind necklace at a Phillips sale held in Hong Kong ...

Until recently, only emerald, ruby and sapphire were officially called precious gems. Everything else was called semi-precious. The precious categorization is a reference to value: a really fine ruby, ...