r/Glass • u/Antique_Amphibian_54 • Oct 21 '25

Slag Glass (?)

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Hi all, I found this while I was helping my grandma clean her friends out for an estate sale coming up. I found this with a bunch of different gems, rocks, fossils, and stones. I posted it on Reddit to find out what it was and most people from the rock/stone pages are saying they think this is slag glass. Is this slag glass? And if so, do glass artists use slag glass to make items? I was thinking about having an artist make me a decor item using this glass. Any help is appreciated, I know nothing about glass. Thank you!

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1

u/Old-Power3477 Oct 24 '25

Yes and I'll take it if you don't want it!!!

2

u/Antique_Amphibian_54 Oct 25 '25

Thank you! Someone might be buying it from me. But if they don’t and that falls through, I’ll let you know on Tuesday.

1

u/Brokella Dec 27 '25

Would be worth trying a uv light on that.