Slice of amethyst geode bordered with agate, black base
MINERAL
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Pink quartz obelisk (9.8kg) on brass base, from Madagascar
Prism of gabbro from Madagascar (2.7kg) on brass base
Prism of gabbro from Madagascar (6.2kg) on brass base
3.1kg Manganocalcite (Huanzala Mine), displayed in a UV lamp cage
Crystalized branch with gypsum under glass (Wahpool lake, Australia)