Set of 4 minerals on cubes: cubic Pyrite on matrix, optical Calcite, Chalcopyrite, Dodecahedral Pyrite.
MINERAL
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Purpurite from Brazil (2.2kg), under rectangular glass and black base
Apophyllite on chalcedony under glass (India)
Brazilian agate slice (490g.) on a brass base
Polished labradorite from Madagascar (3.7kg)