Large Stone Sphere Septarian Nodule 5 inch Crystal Rock Utah #O

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Large 5 inch Septarian Nodule Stone Sphere Decorator Rock

A gorgeous, hand cut, extra large 5 inches in diameter, beautiful Septarian Nodule collector stone sphere from Utah.

This fantastic piece weighs 7 pounds!

This wonderful decorator rock sphere has several open pockets or vugs of yellow crystals. 

This semiprecious gemstone material was formed when the Gulf of Mexico extended into what is now Southern Utah.

Decomposing sea life (especially seashells) had molecular attraction for the sediment surrounding them, forming mud balls. As the ocean receded, the balls dried and cracked. The oceans returned, depositing more sediments.

Aragonite then formed on the edges of the cracks and yellow Calcite crystals formed in the spaces.

The name comes from the Aragonite dividing ("septurn" in Latin) the calcite from the clay.