RARE Fire Glass Buttes Obsidian Rough Chunk Lapidary Stone Magnetite Ledge Jasper but some types that are

but some types that are heavier with irons may need to be treated to polish due to pits

This is certainly one slab of this new material you won't want to miss out on

Gold Sheen

Measurements (inches - longest - approx): 6 x 3

and while a photo may look just like a rock on my end

RARE Fire Glass Buttes Obsidian Rough Chunk Lapidary Stone Magnetite Ledge Jasper but some types that areFire 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 practice, 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