Septarian Nodule Slab! Lapidary Stone Slab! Blue Mountain Agate Clair area are approx 300

Clair area are approx 300 to 308 Million years old

and while it can have the occasional fracture

but some have a skin covering them that makes it hard to see how they might cut

It holds a nice level of the blue

Septarian Nodule Slab! Lapidary Stone Slab! Blue Mountain Agate Clair area are approx 300Septarian 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 and work into some fine cabochons or display slabs! Surviving fossils can also sometimes be found within Septarian Nodules! Most Septarian Nodules come from Utah and Morocco! Measurements