Septerian Agate fossils and is often cut and

and is often cut and polished to enhance its natural luster and appeal

where hot gases rich in sulfur compounds escape from deep within the Earth

Astrophyllite forms in alkaline igneous rocks

Size: 17x7x10 cms

Septerian Agate fossils and is often cut andSize: 15 x 14 x 19 Cm Weight: 3. 701 Kg Location: Madagascar Product Description: The Septarian Agate from Madagascar is a unique and fascinating natural mineral formation composed of agate, a type of chalcedony, a cryptocrystalline form of silica. This formation features a striking pattern of cracks and cavities, often filled with minerals such as calcite, aragonite, or pyrite, creating a beautiful, one of a kind design. Geological Information