Unlike the giant crystal cave of Naica in Mexico, where mineralogists were able to study a still active crystal cave, the crystals in the geode of Pulpí stopped growing almost 60.000 years ago.

These human-size crystals formed in especially strange ways. New clues into ancient climate shifts reveal the possible origin story of Spain's Pulpí Geode, one of the world's largest.

The crystal columns at Pulpí are made of gypsum — the product of water, calcium sulfate, and lots and lots of time — but not much else has been revealed about them since the geode's ...

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.

Large crystals found in geodes and other rocks are relatively rare. Mineral Photos. 1 of 11. Pink Chalcedony A pink chalcedony shows off its beauty.

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 ...

Colossal crystals, gigantic geodes: Selling ‘mind-boggling’ collection no easy task Originally published February 27, 2016 at 8:00 am Updated February 27, 2016 at 12:48 pm ...

Geodes, Agates, and Crystals Will Give Your Home the Natural Glamour You're After. They're the rock stars of the design world right now! By Katherine Kluznik Oct 22, 2018, 8:01 AM ET.

Amethyst typically forms inside geodes, hollow rocks lined with crystals. Over time, ... The rarity and beauty of a large, flawless specimen make it an object of great desire.