natural black obsidian volcanic glass mineral stone specimen white background |
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| navigate by keyword : obsidian stone mineral rock volcanic glass black natural geology crystal specimen gemstone isolated shiny texture reflective dark monochrome smooth sharp glossy igneous geological solid opaque rugged clarity polished macro detail collectible lover volcano cooled formation reflection hardness translucent unique organic unpolished earth rarity silica ornamental jewelry fragment raw |
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| Natural Black Obsidian Volcanic Glass Mineral Stone Specimen on White Background. |
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