Septarian Sphere Skulls Colours of smithsonite include yellow

Colours of smithsonite include yellow

Weight: 686g       Size: H 153mm

(All measurements are approximate across all pieces)

Weight: 292g Diameter 60mm

Depending on how much manganese is present

Septarian Sphere Skulls Colours of smithsonite include yellowWeight: 599g Size: 74mm across (All measurements are approximate) Stand sold separately Septarian, also known as Dragon Stone, is a three color concretion made up of limestone, which is grey, and aragonite, which is brown. The word "Septaria," which is used to describe any concretion with internal fissures or cracks, is where the name derives. During the Cretaceous Period of Earth's history, between 50 and 70 million years ago, this unusual mineral