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Green Fluorite Crystal Cluster from Okoruso, Namibia

Museum-Quality Olkusz Schalenblende: Polished Sphalerite, Galena, Marcasite Ore Specimen

Exquisite Olkusz Schalenblende: Hand-Polished Sphalerite, Galena, Marcasite with Colloform Texture

Visually Captivating Olkusz Schalenblende: Polished Slice Revealing Sulfide Gel Formation  

Olkusz Schalenblende Display Piece: Beautifully Banded Sphalerite, Galena & Marcasite from Southe...