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 ...

Taken by themselves, geodes are gorgeous, with the insides lined with crystals that add a sense of beauty and wonder to the rocks, and they become even more amazing when they are dinosaur eggs, as was ...

Iowa’s state rock is all over the state’s southeast corner, but to find one you need to know someone. “There’s tons of geodes over here, but nobody has opened it up to the public,” said Kirk ...

Geode is a type of sedimentary and volcanic rock that is hollow, vaguely circular rock, in which masses of mineral matter (which may include crystals) are sequestered. The term 'Geodes' was derived ...

Wire wrapping, geode cracking, and a collection of shiny rocks and gems will be on display for all to see at the 45th annual Gem and Mineral Show. The Indian Mounds Rock and Mineral Club will have ...