Fluorite - Greenlaws mine, Daddry Shield, Weardale, Co., Durham, England

From the Puppy Dog Pocket / Cavity.
90 x 75 x 35mm
 
Lovely coloured specimen with some nice zoning to the outer edges of the cubed crystals. The yellow core of the fluorite is very obvious with backlighting,
 
The photographs have been taken in natural daylight so the specimen may show some daylight fluorescence and will look different indoors and under different lighting conditions as does all fluorite.
Typically fluoresces strongly a violet under LWUV.
There is peripheral damage to the crystals, and a small chip to a corner of the main crystal, though it's not immediately apparent, hence the affordable price.