Septerian Agate fossils - Type: Chalcedony (cryptocrystalline quartz)

- Type: Chalcedony (cryptocrystalline quartz) with iron oxide inclusions

Weight: 870 grams

Weight: 162 gram

over 100 million years old

and its orbicular patterns are thought to result from the presence of other minerals or organic matter during its formation

Septerian Agate fossils - Type: Chalcedony (cryptocrystalline quartz)Size: 8 x 6 x 5 Cm (Avg) Weight: 345 Gram (Avg) Location: Madagascar Product Description Polished septarian agate is a stunning natural stone known for its distinct patterns and textures, formed from a combination of minerals such as calcite, aragonite, and limestone. It typically features striking contrast between its honey yellow calcite sections, dark brown or black aragonite veins, and soft grey limestone. This unique mix creates a mosaic like