Counter weight machinery to open a geode
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Geode of agate on round brass base. Mexico
Pipe geode of ametyst -30kg- Madagascar
Prism of gabbro from Madagascar (2.1kg) on brass base
Serie of 12 Agate slices on black cubic stands
Purple Botryoidal chalcedony from Sulawesi
Madagascar green opa 925Gr.l, brass base
Sandcalcite aggregate from Hungary, under glass