Septaria freeform sculpture

Septarie egg large

Septarie about 16 x 12 x 11 cm weighs more than 3 kg

The name septarian comes from the Latin separare = to separate, to separate.
It refers to the fact that septaria have a more solid structure than their host rock.
Therefore septaria remain as a compact tuber

In Madagascar, this tuber is called a septarian thunder egg, dragon egg or dragon eye.

Origin Madagascar

You are buying exactly this pictured polished but not cut septarian egg