Colored Geodes

Geodes are geological formations characterized by their spherical shapes and hollow interiors, often lined with colorful crystals. Derived from the Greek word geoides, which means "earthlike," these unique structures catch the eye of scientists and gem enthusiasts alike. The term geode describes a specific kind of formation found in volcanic and sedimentary rocks. These spherical rocks begin as bubbles in volcanic lava — or as animal burrows, tree roots or nodules in sedimentary rocks which later fill with mineral-rich groundwater.