Do both the 'tops' look the same? Do both the 'edges' & the 'bottoms' look the same? If so, you have you answer about being manmade.

Did you notice that that edge has the SAME texure as the bottoms? BTW, the leaned upon piece is upside down, from original pour. Also, in the first pic, the piece in the upper left corner & the piece it's leaning on do you see those rounded edges? Before they simply pour that slag onto the clay bed, they usually make it as a rounded depression, so the slag (which IS molten hot) will stay pooled in that area & not run away & burn someone who would step in it. In the 2nd pic, the longish piece in the upper right, with the black swirls, just doesn't happen in obsidian. Lauren, there is no test YOU can do to prove it's either, as both are GLASS you just have to take our word for it that that's what it is. And GLASSY? she already knows it's hard enough to be a glass. Varisite w/BLACK SWIRLS in it? I don't think so. when the slag sits for a while (still cooling), it may melt some of the clay bed (clays are usually hydrated silicates), so, it'll melt some of the to something very much like lava, & the escaping water vapor will make a 'popped bubble' appearance on the bottom, too.Ģ9th Jul 2008 04:33 UTC steven garza Dear John They usually pour the molten slag on a clay bed, which is COOL, thus the bottom shells there the top cools fast, too, so it shells just like during mineral formation, the longer something cools the clearer it's likely to be & thus the middle's characteristic. When slag is pour, it cools VERY fast, but The lightest metal included glass rises to the surface, while the heaviest settles to the bottom, with the middle cooling the slowest & being clearer the very fact that the bottom layer, complete w/the 'lava', is SO close to the top suface, would have told you that. Sorry to say, but, virtually all your proofs are NOT pointing to a natural lava or obsidian, but, actually the REVERSE. Thanks!Ģ8th Jul 2008 20:48 UTC steven garza Dear Lauren

Somebody, (who really knows what they are doing) please verify for me. so Im crossing my fingers that I can say THEY ARE WRONG. (not counting the dark green variety that is too dark to photo accurately as a GREEN). and I could find almost NO photos of it online.

The only disturbing thing I found while trying to research this online, was that many people have stated that GREEN OBSIDIAN IS NOT NATURALLY OCCURRING. chocolate on top and minty in the middle. at least it lends credibility to the statement that this is not man made. Im not sure if the dark brown and different top layering is considered a 'cortex' but Im assuming it was a top dried layer that took on a different color at some point. I thought it was obsidian from the characteristic conchoidal fracturing, rough and dirt still on it, and some pieces had lava like sharp and bubbly texturing on one side. Recent Images in DiscussionsĢ8th Jul 2008 18:55 UTC Lauren So, I bought this luscious green stuff over the weekend in Utah. Currier Digital LibraryOpen discussion area.

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Green obsidian color