Septarian Geode Egg TF1790

Septarian Geode Egg Approx. Dimensions: 2.5x2x3.5 inches Approx. Weight: 357 grams Locality: Mexico Includes wood sphere stand as shown in photos. This hand carved septarian geode egg from Mexico was hand carved. The cavern of calcite crystals goes all the way through the egg. The calcite crystals are UV reactive and glow a greenish/yellow under a long-wave UV flashlight! Septarian, a distinctive sedimentary rock, forms through the combination of calcite, aragonite, and limestone with organic matter and minerals such as iron sulfide. It develops in concretions within sedimentary deposits, often found in regions with ancient seabeds, notably in Utah, USA, Madagascar, and Morocco. These concretions undergo a process of cracking and subsequent mineral infill, resulting in the characteristic septarian pattern. Though primarily valued for its ornamental qualities, septarian nodules have also been studied for their geological significance, offering insights into ancient environments and processes.