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 ...

For long-time hunters and novices alike, it’s time to get to crackin’ those crystal-filled geodes as the Annual Geode Family ...

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 ...

Join us on an exciting rockhounding adventure as we search for agates and uncover stunning agatized coral geodes hidden within a Georgia riverbed. This thrilling hunt showcases the beauty of natural ...