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Fluorescent blue and green Fluorite
Cubic, gemmy crystals of fluorite on matrix from world famous locality - Rogerly Mine. Medium luster. 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.
Rogerley Mine, United Kingdom