| 14atmwl ((FLUORITE)) Fluorescent, $10 MINIMUM BID, Rogerly Mine, Frosterley, Weardale, County Durham, England, 8 x 4 x 2 cm, Cabinet | |
 | Here is a Fluorite specimen from Rogerly Mine. These green cubic Fluorites change to a deep blue color in sunlight from the natural fluorescence of the sun. No damage. |
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