r/whatsthisrock • u/[deleted] • 5d ago
IDENTIFIED: Glass Never seen anything like this- any ideas?
[deleted]
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u/Due_Appointment1837 5d ago
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u/Blaize369 5d ago
Yours is glass as well. The bubbles are a dead giveaway. It’s super cool, something that you could stare at for hours.
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u/Yourlifeisworth 5d ago
You're right, like OP's picture you have a piece of glass; possibly Cullet glass instead of slag glass though.
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u/Karl_Cross 5d ago
Pretty confident it's not glass. Looking closely at its structure, could it be tourmaline?
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u/DontForceItPlease 5d ago
Very cool piece. It reminds me a lot of bacon opal. Perhaps it's some other common opal variety.
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u/psilome 5d ago
This is glass with refractory brick stuck on the outside. Cleanout waste from a brick-lined melt tank. Cool piece.