PURPLE FLUORITE Crystal Mineral Specimen - One 3-4 Oz Fluorite Similar to or from Batch Pictured - Natural Purple Crystal Mineral Specimens from Mexico by GeoSpecimens Weight: 3-4 Oz. Size: 2-3" This sale is for one 3-4 Oz. purple Fluorite specimen from Mexico similar to or from the batch of seven pictured. *Please note that you (probably) will not receive the specimen from the main picture (unless you request it first). Fluorite is a colorful mineral, both in visible and ultraviolet light, and the stone has ornamental and lapidary uses. Industrially, fluorite is used as a flux for smelting, and in the production of certain glasses and enamels. The purest grades of fluorite are a source of fluoride for hydrofluoric acid manufacture, which is the intermediate source of most fluorine-containing fine chemicals. Optically clear transparent fluorite lenses have low dispersion, so lenses made from it exhibit less chromatic aberration, making them valuable in microscopes and telescopes. Fluorite optics are also usable in the far-ultraviolet range where conventional glasses are too absorbent for use. Fluorite Properties: Color- Colorless, white, purple, blue, green, yellow, orange, red, pink, brown, bluish black; commonly zoned; can be any color of the spectrum. Crystal habit Occurs as well-formed coarse sized crystals also nodular, botryoidal, rarely columnar or fibrous; granular, massive. Cleavage Octahedral. Fracture Subconchoidal to uneven. Tenacity Brittle. Hardness 4 (defining mineral). Luster Vitreous. Streak White. Courtesy of Wikipedia
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