This Specimen has been sold.
5.2" Blue, Cubic Fluorite Crystal Cluster - Pakistan
This is a 5.2" wide blue fluorite crystal cluster from Pakistan. Under long wave UV lighting, this specimen fluoresces a beautiful purple color. Some of the crystals have a hazy appearance to their faces and some chipping of the terminations. These imperfections have been reflected in the price of the specimen.
Fluorite is a halide mineral comprised of calcium and fluorine, CaF2. The word fluorite is from the Latin fluo-, which means "to flow". In 1852 fluorite gave its name to the phenomenon known as fluorescence, or the property of fluorite to glow a different color depending upon the bandwidth of the ultraviolet light it is exposed to. Fluorite occurs commonly in cubic, octahedral and dodecahedral crystals in many different colors. These colors range from colorless and completely transparent to yellow, green, blue, purple, pink or black. Purples and greens tend to be the most common colors seen.