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.
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 ...
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.
They submerged quartz crystals in a gold-rich fluid and applied ... with quartz veins found in tectonically active areas or even rocks shattered by earthquakes. “In essence, the quartz acts ...
Researchers from the University of Tokyo have released a detailed study of the impact of nuclear radiation on concrete. Their study is one of the first to show how long-term exposure to radiation ...
It's been known for some time that radiation impacts the structural integrity of concrete. However, until now the details of this were unknown. Researchers can finally demonstrate what properties of ...
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Crystals vs Stones
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.
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 ...