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, ...

Near Mogok in Myanmar’s Mandalay region, a staggering 11,000-carat ruby weighing 2.2 kilograms (4.8 pounds) was recently ...

A dazzling selection of Burmese rubies, Kashmir sapphires and rare colored diamonds are on the block at jewelry auctions by Christie’s and Phillips this fall, indicating the enduring investment ...