Rogerley Mine,Frosterley,Country Durham,United Kingdom
10mm x 8mm x 6mm
Cubic, gemmy and lustrous crystals of fluorite on matrix from world famous locality - Rogerly Mine. Fluorite cubes are well coloured - green in artificial light with a strong blue daylight fluorescence, and an even stronger purple-white fluorescence under long wave UV light. This amazing fluorite crystals change colour in different lights - in natural light they are blue, in artificial light they are green. Crystals size up to 2.1 cm. One broken corner and some contacts.;
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