Fluorite, Rogerley Mine, England

Gemmy green fluorite with lots and lots of twinned crystals. This piece shows phenomenal daylight fluorescence turning from emerald green in incandescent light to a vivid blue in daylight. 50 Year Pocket, Rogerley Mine, Frosterley Weardale, Co. Durham, England. Dimensions: 6.5 x 14 cm. SOLD