Counter weight machinery to open a geode
MINERAL
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Selenite slab, Mexico –12.8KG. mounted on a brass base
Labradorite slab (Madagascar)3.8 kg – displayed on a black base
Agate slice from Brazil (1kg) on brass stand
Set of 3 Menilite opals (spain) on mini-cube
Sandcalcite aggregate from Hungary, under glass