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Columbianite volcanic glass 9.6g, Colombia
Obsidian: a naturally occurring volcanic glass formed as an extrusive igneous rock, from Vesuvius volcano, isolated on a white background, Naples, Italy Stock Photo | Adobe Stock
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2 Larger OBSIDIAN Raw Volcanic Glass 0402 Crystal Charged 6.3oz *Read Below* | eBay
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Columbianite volcanic glass 9.4g, Colombia
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Obsidian or volcanic glass isolated on white background Stock Photo by ©kazakovmaksim 148537117
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84.5g Natural Black Rough OBSIDIAN Volcanic Glass Rock - Etsy
