BOGO1/2 Septarian Dragon Egg Geode Nodule Rock Mineral Heart Calcite Aragonite

1044- Septarian Heart Dragons Egg Geode Nodule Gem Stone - 1006g Septarian nodules are made up primarily of three different minerals. The yellow centre is calcite, the brown lines are aragonite or siderite and the outer shell is limestone. They're sometimes likened to a prehistoric mud ball because of the way they formed. I am not a gemologist or a jeweler so I could be wrong on identifying certain stones. Please view all pictures and zoom in for further details, weight, and size.