Septarian Egg Medium

Description

This egg has been carved from a single piece of Septarian. Sometimes these are called Dragon Eggs.  The process that characterises the Septarian concretions remains a mystery. 

A number of mechanisms, i.e. the dehydration of clay-rich, gel-rich, or organic-rich cores; shrinkage of the concretion’s center; expansion of gases produced by the decay of organic matter; brittle fracturing or shrinkage of the concretion interior by either earthquakes or compaction may be mechanisms which create Septarian. 

Dimensions: 115mm
Crystal: Septarian