MINERAL
Active filters
Purple Botryoidal chalcedony from Sulawesi, on black base
Menilite Opal from Spain in matrix
Black Tourmaline crystal with Hematite 1.1KGr on black base
Golden Obsidian disc in spinning brass stand.
Ruby-zoizite polished ball, spinning brass stand
crystals of Beaujolais Moulin a vent barrels