“Fluorite. 109 x 76 x 55mm. up to 23mm on edges. Greencleugh Vein (mined 1988), Frazer´s Hush Mine, Rookhope Dist., Weardale, North Pennines, Durham, England, UK. Ex - Jesse Fisher coll. Acquired Munich show 2012. Martin Gruell Fluorite Collection. Photo Gruell.”