Group of very big (as for Rogerley) gemmy twins with medium luster on small matrix. This amazing fluorite crystals change colour in different lights - deep green in artificial light with strong blue daylight fluorescence, and an even stronger purple-white fluorescence under long wave UV light. Crystals size up to 2.7 cm. Minor abrasions and very small chip on one corner. Specimen from new Penny`s Pocket - read more about this pocket here.