Jalisco Rainbow Obsidian Rough – Old Stock Small Cutter with Dome Polish Potential petrified-wood but some glass butte or

but some glass butte or davis creek may be present  Most of this is black obsidian

formed in volcanic gas pockets

and Biggs Agate

then this box becomes a score

This slab has some great coral cell pattern

Jalisco Rainbow Obsidian Rough – Old Stock Small Cutter with Dome Polish Potential petrified-wood but some glass butte orJalisco Rainbow Obsidian Rough Small Cutter with Dome Polish Potential This is a smaller chunk of Jalisco Rainbow Obsidian showing beautiful internal color banding. At 3 oz, its a compact piece perfect for giving a domed polish for display or working into a freeform cabochon. Please check the measurements to ensure its the right fit for your cutting needs. Key FeaturesMaterial & Origin: Rainbow Obsidian, 100% natural, Jalisco, MexicoDimensions