Septarian Egg Madagascar Dimensions: 7.2 x 6 x 5.5 cm
This is the exact item you will receive.
Septarian is less a single mineral than a geologic structure—specifically, a type of concretion that developed internal cracks which were later filled by minerals. That distinction is useful because a lot of material sold simply as “septarian” is actually a combination of several minerals:
Yellow to honey-colored material: commonly calcite
Brown/tan material: commonly carbonate-rich concretion material, frequently described as aragonite in the trade
Gray/black material: sedimentary limestone/marl or clay-rich matrix
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Returns
✔ Online sales: 14-Day Easy Returns for online purchases (prepaid US label, International returns customer paid label)
✔ In Store sales: We allow exchanges within 14 days of purchase; specimens are final sale and cannot be exchanged
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