Polished Dendritic Agate - Madagascar Pebble They have been polished to

They have been polished to fit comfortably in the hand

These striking visual elements were created millions of years ago when fine volcanic ash and silica-rich muds were deeply buried and permeated by iron oxides

Remove from the light

making it a popular choice for decoration or collectibles

A stunning addition to any mineral collection

Polished Dendritic Agate - Madagascar Pebble They have been polished toThis 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