This calcium fluoride has the widest color range of any mineral and often exhibits several colors in the same specimen. Fluorite forms as cubes, octahedrons, massive granular, or compact. Its name is derived from the Latin fluere, meaning “to flow,” due to its use as a flux in iron smelting. The word “fluorescent” comes from fluorite crystals being the first minerals found to fluoresce. Fluorite is also used to make opalescent glass. Metaphysically, fluorite aids in healing and protects from stress, especially electromagnetic stress. Deposits are found in USA, China, Mexico, Canada, Spain, and UK.