Septarian nodules from UT are usually complete nodules, but a few are broken nodules, like the one shown in the image to the left. (Stock 645) A new supply of septarian nodules allowed us to get small nodules from one to two pounds each. Larger nodules can range from 5 to 15 pounds per nodule. The septarian nodules may be solid or have a geode center with possibly yellow calcite crystals lining the cavity, if in geode form. Fossils have been found in some septarians. One fossil found in a septarian nodule, to the delight of it's owner, was right in the middle of the nodule when it was slabbed. It turned out to be a 3" ammonite. The brown lines in the septarians are aragonite and the outside matrix is limestone with yellow calcite centers. These will take a nice, interesting polish. Septarian nodules when prepared and polished will make beautiful spheres, specimens, bookends, clock faces and more. Check out some other web sites which offer septarian nodule spheres, priced at many hundreds of dollars. All septarians have some natural fractures and as a safety measure, it is adviseable to reinforce any noticeable fratures with Red Label Hot Stuff or Crazy Glue before sawing the septarian in half or slabbing. This will help guard against the possibility of breakage if they have a large void, which could be damaged, when the piece falls in the saw.