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It is a very rare form of petrified wood
It is currently unknown what species Washington State coprolite from the Wilkes Formation is from
with this material being very worthwhile
Its very easy to see why this stone is so popular
RARE Fire Glass Buttes Obsidian Rough Chunk Lapidary Stone Magnetite Buchanon Thunderegg It is a very rareFire 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
