The villagers in Wollo, Ethiopia, made the discovery almost 9,800 feet above sea level. Their tunnels follow a single opal ...

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 ...

Among the rarest gemstones and most coveted in the world of high jewellery, Brazilian Paraíbas are prized for their almost ...

Serena Dyer does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond their ...