Slag glass chunk, slag glass rock, Fenton cullet, vaseline glass, ebay, vintage

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Vaseline Slag glass/rock/mineral chunk Uranium glass, hippie glass chunk Actual Vaseline glass which is a pre1920s chunk. This piece contains uranium dioxide (non toxic) which makes it glow, antimony & calcium silicate crystals. This piece is also considered obsidian. It wasnt discovered till the 1990s, that slag glass is actually a mineral called obsidian. glass. This piece weighs around 8oz 3"x.3"x 15" it is solid . It is Fenton cullet glass high grade. It will also be good for display piece, lapidary, cabbing and making vintage jewelry or what ever else you think of. Note slag/glass/mineral/rock has imperfections, may have cracks or bubbles but thats what makes it a piece of art. every piece is different. . This piece is Fenton cullet glass but was discarded. It is actually a yellow vaseline color & has uranium dioxide to glow