Pure quartz, or “rock crystal” from Brazil. Source: Didier Descouens, CC BY-SA 4.0 Pick up a rock almost anywhere on Earth and chances are pretty good that there’s at least some quartz in it.

Oregon's state rock is celebrating its 60th anniversary this year. Here's everything to know about the thunderegg and where ...

Pure quartz crystals have been spotted on Mars for the ... the lake bottom and began climbing the crater’s rim, where the rocks… Receive a weekly dose of discovery in your inbox!

Geodes, for instance, are created when mineral-rich water seeps into hollow spaces within rock formations and slowly evaporates, leaving behind dazzling crystals like quartz and amethyst.

Evidence for the use of rock crystal - a rare type of perfectly transparent quartz which forms in large hexagonal gems - has occasionally been found at prehistoric sites in the British Isles, but ...

Large crystals found in geodes and other rocks are relatively rare. Pink ChalcedonyA pink chalcedony shows off its beauty. Chalcedonies include many types of cryptocrystalline quartz gems and ...

Rocks and crystals on Mars could hold the evidence of ancient life scientists have been looking for. Image source: NASA/JPL-Caltech/ASU However, the existence of these pure quartz crystals ...

More than one of our readers suggested we highlight this beautifully-shot process documentary about the laborious and precise manufacturing of piezoelectric quartz crystals in the early 1940s.