Septarian Nodule Fossil

Septarian Nodules are concretions that have a series of radiating cracks, crossed by a series of concentric cracks to form a “turtle-back” appearance.  Septarian Nodules formed at the bottom of the Cretaceous Sea 50 to 70 million years ago. Sediment composed of decomposing animals and plants formed into ball-like shapes. They are composed of Calcite which creates the yellow center. Aragonite creating the brown and Limestone makes up the outer grey rock. 

Each piece is similar, though no item at Crystal Joys is exactly the same as every item uses a unique stone that is non-fabricated.  Every item at Crystal Joys is truly "one of a kind". Slight variations in color, size and bead shape exist.