Good specimen of gemmy and super lustrous fluorite crystals from world famous locality - Rogerly Mine. Good color and shape! Fluorite cubes are well coloured - dark emerald green in colour with a strong blue daylight fluorescence, and an even strong 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. Sharp crystals, nice purple fantoms in daylight.