Set of 4 minerals on cubes: cubic Pyrite on matrix, optical Calcite, Chalcopyrite, Dodecahedral Pyrite.
The Unclassifiables
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Purpurite from Brazil (2.2kg), under rectangular glass and black base
Black Tourmaline from Brazil (8.2 kg), black base
Large crystals 8Kg Fluorite -Madagascar- brass base
Green Fuchsite from Brazil, 4.2kg with a black base