oregon aurora borealis obsidian rough pieces 7.40 lbs

Description

I was sorting through my pile of obsidian I bought a couple years ago and ran across more of the glass buttes aurora borealis pieces.you can tell by the crust on them.it is very directional material like most obsidian.I can look at the same piece several times and then discover something.they need to be studied very close.often cutting or chipping will show more.it is also the hardest obsidian I have ever seen.It is hard to chip with my copper tool. 7.40 lbs
I can leave boxes open for up to 14 days
these have been photographed wet
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