Blue obsidian
Misleading commercial name for man-made, blue-colored glass. Sometimes with swirly “inclusions” but mostly crystal clear in various shades of blue. Sometimes clearly identifiable as glass…
Misleading commercial name for man-made, blue-colored glass. Sometimes with swirly “inclusions” but mostly crystal clear in various shades of blue. Sometimes clearly identifiable as glass…
This is perhaps one of the biggest and most persistent hoax stories today. Often referred to by sellers as natural volcanic glass, sometimes with the…
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