Quartz occurs in many igneous and metamorphic rocks, particularly in granite ... Delve into the captivating world of Nuummite - a powerful crystal with extraordinary healing properties. Learn about ...

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 ...

These three crystals captured in Colombian rock crystal quartz host three crystal morphologies of the rare mineral parisite: bipyramidal, hexagonal tabular prism, and pyramidal forms. Photomicrograph ...

Unlike mineral particles found in clouds on Earth, the quartz crystals detected in the clouds of WASP-17 b are not swept up from a rocky surface. Instead, they originate in the atmosphere itself.

Figure 1. This 52.99 ct freeform cabochon of rock crystal quartz, reportedly from Brazil, contained several epigenetic discs of malachite. Photo by Robison McMurtry. When mineral-rich fluids become ...