Discovered in 1999 during mining operations in the Mina Rica (the Rich Mine) in Almeria, southeast Spain, the crystal geode of Pulpí hosts among the most beautiful crystals ever discovered. Even if ...

In an abandoned mine in southern Spain, there is a room of pure crystal. To get there, you'll have to descend deep into tunnels, climb a ladder into an inconspicuous hole in the rocks and squeeze ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. The geological history that led to the formation of giant crystals and ...

Sparkling hollows filled with lustrous crystals, dubbed geodes, are often perceived as small objects that can fit comfortably on a bookshelf. But some are more like gigantic cathedrals filled with a ...

Crack open an unassuming stone, and you might just uncover a little conclave of crystals within. Their walls are glittering with quartz, amethyst, or calcite, protected by a hard shell that was shaped ...