153 ❤️ Septarian Gemstone Crystal Pendant Necklace

Beautiful Septarian Pendant Necklace. A septarian is a fascinating geological formation! A septarian is a type of concretion that forms in sedimentary rocks, typically in shale or limestone. It's characterized by a series of cavities or cracks that are filled with minerals like calcite, aragonite, or pyrite. These cavities are often arranged in a pattern of radiating cracks or septa, hence the name "septarian". Septarians are formed when a concretion forms around a central point, like a fossil or a mineral deposit. As the concretion grows, the surrounding rock may shrink or crack, creating the characteristic septa. Septarians are often prized by rock collectors for their unique and beautiful patterns. They can also provide valuable information to geologists about the conditions under which the surrounding rock formed.