More than 4,000 naturally occurring minerals—inorganic solids that have a characteristic chemical composition and specific crystal structure—have been found on Earth. They are formed of simple ...

Rose quartz gets its name from its color ... of rose quartz comes from "microscopic inclusions of aligned silicate mineral ...

Quartz is the second-most abundant mineral in the continental crust, and is present both as visible crystals, ranging in size from immense outcroppings weighing tons down to the grains of beach ...