Today on A Moment of Science, we’ll look at how geodes form and how they collect in such complex patterns.

These remarkable formations, often hidden in plain sight, encapsulate a world of beauty that can span millennia in the making. But what are geodes exactly, how do they form and where can you find ...

The geode of Pulpí was discovered in 1999 in the Mina Rica silver mine in southeast Spain. The walls of the cave are covered with huge crystals that are so transparent they look like blocks of ice.

Gabriela Farfan, the Smithsonian's curator of gems and minerals, answers the internet's burning questions about gemstones. Are all minerals crystals? How are diamonds cut? How do geodes form? Is ...

A paper published in the journal ‘Geology’ suggests that the climate controlled crystal growth in the famous Geode of Pulpí.

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 ...

In the mid-1960s, physicists first suggested that stellar collapse should not form true black holes, but should instead form Generic Objects of Dark Energy (GEODEs).