A listing in the Guinness Book of World Records was followed by a years-long battle over ownership of the Ophir Collection. It’s possible there’s a curse attached to the Ophir Collection, a trove of ...

Gemstones are valued based on the Four Cs - color, clarity, cut, and carat. Precious stones include diamonds, sapphires, rubies, and emeralds. Semi-precious stones are evaluated on their rarity and ...

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, ...

Marvel has unveiled a collection of 'Infinity Stones' comprised of actual precious gems with a combined value of more than $25 million – and their very own Infinity Gauntlet. The $25 million valuation ...