Inside the world's largest geode, which can contain at least six people at a time, you'll see crystals of 8 to 18 inches penetrating walls made of the bluish mineral, celestite.

In 2019, Michal Mael brought a massive geode to the Kino Gem Show. It weighed thousands of pounds and had a heavy door attached — for everyone who has ever dreamed of being encapsulated by amethyst.

An abandoned mine in Spain hides a sparkling treasure – the world's largest geode, a natural crystal phenomenon that has stunned scientists. In abandoned silver mine in Pulpí, in Spain's south ...

Geodes are hollow rock filled with dazzling crystals. I'm at the American Museum of Natural History in New York City and behind me is an amethyst geode that was formed millions of years ago.

On a recent two-day trip seeking Iowa history, Marion and Rich Patterson discovered that Keokuk is much like its abundant geodes: ordinary on the outside, and sparkling on the inside.

As described in the news release, a geode is "a rock with a surprise inside!" This event kicks off at 10 a.m. and goes until 1 p.m. It includes the geode cracking, as well as a short hillside hike ...