Septarian Sphere Science Kits Educational Value: Demonstrates mineral formation

Educational Value: Demonstrates mineral formation in oxidized ore deposits and crystal habit in silicate minerals

or ocean enthusiasts

Precision-balanced for fair and accurate rolls

Includes a wooden stand for elegant display on desks

Polka-dot fabric-lined interior with a zippered pocket for organization

Septarian Sphere Science Kits Educational Value: Demonstrates mineral formationThis sphere is carved from septarian, a unique rock formed from a combination of minerals including calcite, aragonite, and limestone. Septarian nodules develop when mineral rich mud cracks and fills with calcite or aragonite over millions of years, creating striking patterns of yellow, brown, and gray. Why you'll love this: Material: Septarian (limestone with calcite and aragonite) Size: Approximately 2 to 2. 5 inches in diameter Appearance: Polished