Natural Large Septarian Nodule Oval Cabochon Brown, Black, White

All natural Septarian Nodule Large Oval Cabochon
Great collector's specimen or perfect for setting. Awesome colors and patterns.
Polished top and rounded flat sides, flat unpolished back.
Size: 51 x 36.6 x 5.4mm low dome
Septarian nodules are commonly found in sedimentary rocks, often associated with ancient seabeds. They can be discovered in various geological formations, including limestone, shale, and mudstone. Some call it a fossil mud ball, Dragon Egg, or Dragon Stone.
Moh’s of around 4.0.
Ships in bubble wrap in box in bubble mailer, securely