The world’s most expensive substances command their prices for very different reasons. Some, like rare gemstones, are ...

Long before they’re polished and set in gold, the world’s greatest gems sleep beneath mountains, rivers, and deserts. Their origins are as captivating as their glow: volcanic depths, ocean floors, and ...

When someone says “gemstone,” diamonds and rubies probably pop into your head first. There’s no denying that they’re rockstars of the jewelry world. However, apart from them, there’s a whole lineup of ...

A Carthage man may have unearthed one of the rarest gemstones in the world — not in a mine, but in his own front yard. Robert Lewis Jr. says he found an unusual black rock just steps from his home ...