RARE Fire Glass Buttes Obsidian Rough Chunk! Flatrate Measurements(inches - largest - approx):

Measurements(inches - largest - approx): 3

but possibly some magnetite with rainbow and mahogany coloration

and Bat Cave Agate is a form of Moss Agate that can have nice colorations and patterns

Fire Obsidian is easily one of the most rare forms of obsidian known to exist

The photos for this listing are a representation of potential grade you will get

RARE Fire Glass Buttes Obsidian Rough Chunk! Flatrate Measurements(inches - largest - approx):Fire Obsidian is a bright fiery flash, which can sometimes contain other bright colors. It tends to run along a strand, and takes a lot of practise, patience, and skill to cut slabs and cabs of it. It is one that is recommended for lapidary veterans. Fire Obsidian gets the color and flash from magnetite, which are tiny microscopic metal flecks, that are embedded within the volcanic glass. Fire Obsidian is easily one of the most rare forms of obsidian