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 ...

Boulder, Colo., USA: The geode of Pulpí is an 11-meter hollow ovoid with crystal-paneled walls. It is like those familiar couplets of stone interiors covered with bright crystallites, but so large ...

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 ...

Since at least December 2017, a photograph of an impressively tall geode has bounced around the blogophere, almost always credited to a company called Nowar Minerals Inc. and accompanied by the ...

The development of plans for a large geode was clearly the most challenging assignment for McNamara Alumni Center's structural engineers, Minneapolis-based Meyer, Borgman and Johnson (MBJ). The ...

TUCSON (KGUN9-TV) - The world's largest amethyst geode debuted in public for the first time in Tucson during the 2016 Tucson Gem, Mineral and Fossil Showcase. It measures 13 ft long, 5 ft high, and ...

BALLY – They form deep in the earth over thousands of years, but today they will be on display in the air above ground. Geodes – hollows in underground rocks that are filled with crystals caused by ...