Concretion 3
US$52.00
- Septarian Concretion Set ( both halves )
- Variety: Cut and highly polished Concretion
- Weight : 6.8 pounds (3084 grams)
- Width : 8.0 inches (20.32 centimeters)
- Height : 5.0 inches ) 12.7 centimeters)
- Location: Huerfano County, Colorado
- Formation: Graneros Shale Formation
- Age: 70 - 90 Million years old