Mineral: Fluorite
Locality: Rogerley Mine, Diana Maria Mine (Sutcliffe Vein) , Frosterley, Weardale, North Pennines Orefield, County Durham, England / United Kingdom
Dimensions: 6.7 x 4.5 cm.

Description: Gemmy emerald green fluorite crystals to 1.0 cm several of which are penetration twinned and display tetrahexahedral faces.

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