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 ...

Take a walk down the mineralogy collection of any good natural history museum and your face will be aglow with the sparkle of minerals, crystals ... such as that classic rock diamond, but there ...

Webb observed the WASP-17 system for nearly 10 hours, collecting more than 1,275 brightness ... sense if they are made of quartz. While these crystals are probably similar in shape to the pointy ...

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 ...

An "amazing" new type of mineral has been discovered by scientists analysing a rock mined in Cornwall about ... For centuries, mineralogists believed the green crystals to be a variation of ...