Well formed, cubic, penetration twinned, gem and lustrous crystals of fluorite on matrix from world famous locality - Rogerly Mine. Lustrous fluorite cubes are well coloured - dark emerald green in colour with a strong blue-purple 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.