Rock Crystal.
Origin: Brazil
Size: 4-6 cm approx.
BOX OF 4KG
Rock crystal is, in essence, the purest and most transparent form of quartz. This mineral is incredibly common, making it one of the most abundant in the Earth's crust.
Rock crystal is known for its trigonal crystallization system, which gives it a distinctive shape: a hexagonal prism topped with pointed faces (a pinacoid). In fact, the word "quartz" comes from the Greek term "kristallos," which means "ice," a reference to the ancient Greeks' belief that rock crystal was permanently petrified ice.
