Utah Septarian Nodule Rough Chunk! Kaleidoscope Agate The stunning effect is caused

The stunning effect is caused by lamellar twinning inside the crystals

24The last photo has been taken dry so that you may see any defects

Lapidary Use: Ideal for testing

Damascus Obsidian often has a grey mostly pure obsidian that can sometimes also have designs

Utah Septarian Nodule Rough Chunk! Kaleidoscope Agate The stunning effect is causedThis 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