Handbook of Mineralogy · Fluorite
Cite: Handbook of Mineralogy (Mineralogical Society of America). Named CaF2 species page, crystallography. https://www.handbookofmineralogy.org/pdfs/fluorite.pdf
Mineral
Fluorite · calcium fluoride
Fluorite is calcium fluoride. Crystals are often cubes or octahedra. Color bands in purple, green, blue, and yellow are common. Soft (Mohs 4), a display mineral more than a pocket stone. People collect it for the geometry. Cards below cite public fluorite and fluorspar pages. Naming a purple cube vs purple quartz points is an identification-kit job; keeping the named cube is a display-kit job: ID kit vs display stand.
Cited public sources
Webmineral · Fluorite
Cite: Webmineral. Named fluorite species page (formula and crystal system). Not inventory. https://webmineral.com/data/Fluorite.shtml
USGS · Fluorspar
Cite: U.S. Geological Survey, National Minerals Information Center. Fluorspar statistics, supply of fluorite. https://www.usgs.gov/centers/national-minerals-information-center/fluorspar-statistics-and-information