Super, beautiful polychrome = multi-colored CHALCEDON FIRESTONE.
Typical for Feurstein is the tuber shape and the weathering bark.
Highly interesting colors and structures. Razor-sharp breaking edges.
15 x 10 x 5 cm
It was found in Antsirabe in Madagascar
Photographed wet – when dry the bark color is less red. The last picture is the back of the tuber-