Utah Septarian Nodule Rough Chunk! Yellow Jacket Jasper Most pieces show high-grade pattern

Most pieces show high-grade pattern right out of the bag

they are pretty neat

and the Chinese often call it Picasso Jasper

These are 100% authentic fossil specimens from the world-famous Green River Formation in Wyoming

Utah Septarian Nodule Rough Chunk! Yellow Jacket Jasper Most pieces show high-grade patternThis septarian nodule is from Utah. We've had a very high rate of gorgeous calcite and pattern within these, and a few from this mine that we've cut have even had ammonite fossils within. Septarian Nodules are round stones that were organic fossils that were devoured by bacteria and replaced with calcite! They can be geodes (hollow with calcite crystals), or solid with unique and interesting patterns! Most Septarian Nodules take an excellent polish