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This specimen of fluorite from the Berta quarry shows us groups of crystals but also isolated crystals. The matrix is "old" red granodiorite and is lined by tiny, almost colorless fluorite octahedrons. If there is something to be highlighted about this piece, it is that the octahedral fluorite crystals show the faces of the rhombododecahedron, the cube and the tetrakishexahedron at the vertices.