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 ...

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 just $10, you can be the jewel of the gem show, seated inside an amethyst geode that's 9 feet tall and 6 feet across. Oh, and since it's 6-feet-deep, they can also shut you inside the geode. This ...

Since at least December 2017, a photograph of an impressively tall geode has bounced around the blogophere, almost always credited to a company called Nowar Minerals Inc. and accompanied by the ...