Septarian was formed around 50 to 70 million years ago during Earth’s Cretaceous Period when dead sea life had been attracted to molten sediment from volcanic eruptions. Over time as sea life began to die, their chemical composition became enriched in sedimentary rock, forming the nodules we see today. The chemicals within the dead sea life eventually crystallized and formed Aragonite and Calcite crystals.
Chemical Formula: (CaCO3) + (CaMg(CO3)2
***NOTE TO BUYER***
This is a "random selection" listing. You will NOT receive the exact item photographed in the listing, but one that is very similar. However, due to the unique nature of each mineral the size, shape, and color may vary slightly.
The size of this product is categorized by weight. Because of this, the dimensions and style of the mineral may vary. If you have certain requirements regarding specifications, please note them within the order or contact us.