Septarian half with visible Turritella Fossil remnants

Septarian half with rare turritella fossil visible on the stunning lap polished face and another can be seen on the back unfinished side. Has a beautiful calcite and aragonite pattern and small calcite crystal hollow making this a unique and rare piece! Approximately 1 1/4 lbs., 4 1/2" in diameter and 1 1/2" thick. Comes with acrylic stand and information card. Give a Gift from History....Septarian Geodes formed during the Cretaceous Period (66 to 145 Million Years Ago)!