This reliquary holds a bone fragment purportedly belonging to Saint Sebastian, within a central rock-crystal vessel. Reliquaries—containers constructed to hold relics, typically the bones of saints or ...

This is the impressive moment a Chinese man transformed an ordinary rock into a transparent crystal plaque. The artisan ...

Distinctive and rare rock crystals were moved over long distances by Early Neolithic Brits and were used to mark their burial sites, according to groundbreaking new archaeological research. Evidence ...

Opinions expressed by Forbes Contributors are their own. David Bressan is a geologist who covers curiosities about Earth. “We were thrilled!” said Dr. David Grant, a researcher at the ...

Crystals inside a Martian meteorite hint that there may have been plentiful hot water on Mars when the rock formed 4.45 billion years ago. The rock, nicknamed Black Beauty, was blasted into space ...

A close-up photo taken by the Curiosity rover shows pure yellow sulfur crystals within a rock. NASA’s Curiosity rover ran over a rock on Mars in late May. That’s par for the course on the red ...