Most geodes can fit in the palm of your hand. The Pulpí Geode can fit your entire family inside it. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it ...

The geological history that led to the formation of giant crystals and a 36-foot geode has been revealed by scientists. By looking at the abandoned mine where the geode of Pulpí was found, they were ...

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 ...

Any geode might make us wonder: What geologic forces form these hollows lined with crystals? But the Pulpí Geode, discovered in an abandoned Spanish mine, takes wonder to a different scale. One of the ...

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 ...

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 ...

Göttingen University researcher Fiorella Arduin Rode working in open pit mine of the study area, Los Catalanes mining district, northern Uruguay. Along with Ametista do Sul in southern Brazil, these ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Discovered in 1999 during mining operations in the Mina Rica (the ...