HQRP-Crystal Fluorite (CA75) You will receive: ___ (Stand not Included). Formula: CaF2; System: Isometric; Colour: Green / Blue / Purple; Hardness: 4; Member of: Fluorite Group; Named in 1797 by Carlo Antonio Galeani Napione from the Latin, fluere - to flow (for its use as a flux). The term fluorescence is derived from fluorite, which will often markedly exhibit this effect. The element fluorine also derives its name from fluorite, a major source for the element. Most fluorite occurs as vein fillings in rocks that have been subjected to hydrothermal activity. These veins often contain metallic ores which can include sulfides of tin, silver, lead, zinc, copper and other metals. (The above information is provided solely for informational purpose. Kindly note that all stones are offered for decorative purposes only. Please, handle your stones with great care, do not grind or crumble them, do not dip or add them into your food or drink, do not use any parts of them in any elixirs, potions, lotions etc. Always make sure you wash your hands before and after working with your crystals.)