Septaria Sphere "Dragon Stone"

This septaria sphere, also referred to as “Dragon Stone” (Some of the features resembling dragons scales..) is a concretion composed of Aragonite (the brown), Calcite, (the yellow), and Limestone (the grey). This unique mineral was formed around 50 to 70 million years ago during Earth’s Cretaceous Period. Sea life during that time was attracted to the molten sediment that was produced by volcanic eruptions. Overtime as sea life began to die, their chemical composition became enriched into sedimentary rock, thus forming the material we see today. 

This sphere has a diameter of 47mm with a packed shipping weight of 220gr.