Fluorite (Rogerley)

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FLUORITERogerley MinePenny's Pocket (2011)WeardaleCounty Durham, England4.3 x 2.75 x 1.3 Inches 11 x 7 x 3.5 CentimetersCabinetNicely twinned rectangular crystals sit at the top of this specimen alongside a bunch more twinned crystals below. The "Penny "Pocket" was named after Penny Williamson who was curator of geology at The University of Wollongong in Australia. Many of the specimens were very large and of great quality! Rogerley fluorite is one of our favorite minerals for its natural ability to color shift in sunlight(blue), artificial(green) and UV(purple) light. The source responsible for the amazing colors is a bit of a mystery but it is believed to be a result of structural defects and not influenced by outside sources. Show more