3.6" Stormy-Day Blue, Cubic Fluorite Crystal Cluster - Sicily, Italy

This is a cluster of cubic fluorite crystals that exhibit a stormy-day-blue color, collected from Poggio Balate in Sicily, Italy. It measures 3.6 x 2.7", the largest cube is .45" wide and the specimen comes with an acrylic display stand.

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, and colorless, pink, and black are the rarest.
Poggio Balate, Termini Imerese, Metropolitan City of Palermo, Sicily, Italy
3.6 x 2.7" entire specimen, the largest cube .45" wide