Septarian Sphere Science Kits and family game play

and family game play

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

Adds a distinctive

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

or ocean enthusiasts

Septarian Sphere Science Kits and family game playThis 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