It occurs as cubic, isometric crystals and cleavable masses. When pure, it is colorless and transparent, or translucent with a glassy luster.
Impurities cause color in the stone, and several varieties exhibit fluorescence.
Usually found either in pure veins or associated with lead, silver, or zinc ores, it is common in limestone and dolomites. Fluorite occurs in England and the United States. Multiple uses in the fiberglass, ceramic, welding rod, and glass industry.