Polished Dendritic Agate - Madagascar Godzilla Calcite I have quite a few

I have quite a few more available

This jet black Schorl specimen from Namibia is a beautiful representation of Erongo Tourmalines

When it is exposed to UV light

it is similar to sodium-calcium zeolite mesolite and sodium zeolite natrolite

relatively undamaged

Polished Dendritic Agate - Madagascar Godzilla Calcite I have quite a fewThis Polished Dendritic Agate is a striking mineral specimen sourced from the rich, diverse geological deposits of Madagascar. As a semi translucent variety of chalcedony quartz, this material is defined by its complex, tree like or fern like inclusions trapped inside a clear to milky silica body. These delicate structures are formed by a process known as dendritic branching, which occurs when iron and manganese rich mineral fluids seep into micro