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.

DANVILLE — Armed with shovels, rakes, and concern for the environment, members of Iowa’s Oldest Boy Scout Troop, Troop 3 of Burlington, recently completed a substantial Conservation Good Turn project ...

Any geode might make us wonder: What geologic forces form these hollows lined with crystals? But the Pulpí Geode, discovered in an abandoned Spanish mine, takes wonder to a different scale. One of the ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. Discovered in 1999 during mining operations in the Mina Rica (the ...