Septarian Sphere Science Kits Precision-balanced for fair and accurate

Precision-balanced for fair and accurate rolls

they drape from a natural wood hanger to create this unique wind chime

it’s the ultimate accessory for budding scientists

Explore elements and compounds

or ocean enthusiasts

Septarian Sphere Science Kits Precision-balanced for fair and accurateThis 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