Fluorite - Image by Sonatona
Country of Origin: Argentina, Austria, Canada, England, France, Germany, USA
Physical Properties: Fluorite is frequently fluorescent under ultraviolet UV light. The fluorescence is thought to be due to impurities of yttrium or other types of organic matter within the crystal lattice. The color of visible light emitted when a sample of fluorite is fluorescing appears to be highly dependent on where the specimen was collected.
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