Amethyst geodes—some stretching 5 m long—dot the ancient lava flows of Uruguay’s Los Catalanes mining area. The geodes contain calcite, colorless quartz, and agate, another quartz mineral. Large ...

Amethyst is a violet variety of quartz which has been used as a gemstone for many centuries and is a key economic resource in northern Uruguay. Geodes are hollow rock formations often with quartz ...

There's something distinctly mysterious and cool about geodes... rocks hidden in plain sight that contain a astonishing array of crystals within, just waiting to be discovered. There are a lot of ...

Amethyst is a violet variety of quartz that has been used as a gemstone for many centuries and is a key economic resource in northern Uruguay. Geodes are hollow rock formations often with quartz ...

When it comes to home accents that add character and color, crystals like geodes deliver the goods. These rock structures with internal cavities filled with minerals can be absolutely captivating.