11-1/2" Utah Septarian Bookends Agate Bookends when it needed to either

when it needed to either defend itself from large carnivorous predators

amphibians and all other life in those wetlands (bogs) were suffocated by the ash and immediately there began a permineralization / petrification process

pyrite gives off sparks

This is a large cuff that would fit an 8 or 9 inch wrist

11-1/2" Utah Septarian Bookends Agate Bookends when it needed to eitherThese strange and handsome Geodes are from the Henry Mountains of Utah. Originally formed in an ancient sea floor some 50 70 million years ago, sediment collected around sea life as they decomposed, forming a concretion. Calcium carbonate from the shells of these creatures began to take a new form over time, creating calcite crystals and bands of aragonite. As the oceans receded, these mud balls hardened, shrinking and cracking in the sun. The gold