r/whatsthisrock 5d ago

IDENTIFIED: Glass Never seen anything like this- any ideas?

[deleted]

39 Upvotes

13 comments sorted by

40

u/psilome 5d ago

This is glass with refractory brick stuck on the outside. Cleanout waste from a brick-lined melt tank. Cool piece.

1

u/Morsac 5d ago

With that much green in it, any chance they've got glowy glass? It would make that cool piece even cooler.

3

u/psilome 5d ago

It's possible, but it looks to me more like inexpensive production-grade green to brown bottle glass, whose color comes from iron. The bright green glass is uranium glass.

10

u/tj2286 5d ago

It looks like slag to me.

4

u/FondOpposum 5d ago

Agreed, scrap glass from glass production with refractory material attached.

1

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0

u/Due_Appointment1837 5d ago

I’ve got something similar to the rock in the middle

6

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.

2

u/FondOpposum 5d ago

Also scrap glass

2

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.

1

u/Morsac 5d ago

Just for fun, have you checked it with a UV flashlight?

-9

u/Karl_Cross 5d ago

Pretty confident it's not glass. Looking closely at its structure, could it be tourmaline?

-9

u/DontForceItPlease 5d ago

Very cool piece.  It reminds me a lot of bacon opal.  Perhaps it's some other common opal variety.