Rockhounders can find all kinds of gemstones across the United States, but there are certain places where geodes can be found ...

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 ...

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 ...

Thundereggs look like regular rocks from the outside, but contain intricate and colorful mineral patterns inside — often made ...