Do your kids love craft projects and science experiments? If yes, then they will love this DIY eggshell geodes project. This crystal-growing DIY project is part craft and part science, which will ...

Growing up, kids often have a fascination with rocks: smooth ones, shiny ones, uniquely shaped ones; and who doesn’t like a surprise? Combine those two elements and you have Geode Cracking, a NEW ...

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 ...

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 ...

In a recent article in Miner Deposita, researchers presented a comprehensive study of the amethyst and agate geodes in the Los Catalanes Gemmological District of Northern Uruguay. This region is ...