Kidney stones are more common than you might think, and misinformation can lead to unnecessary panic. These hard mineral deposits form in the kidneys due to excess calcium, oxalate, and uric acid in ...

Pink ChalcedonyA pink chalcedony shows ... allowing beryl to form semiprecious stones such as aquamarine. Minerals and gems are classified by their physical properties, including hardness, luster ...

Deep below Earth's surface, rock and mineral formations lay hidden with a secret brilliance. Under a black light, the ...