Dug this up in my backyard. What is it?

[Ibdaveisme]

Putting up a new fence I found this buried. What is it?

 

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[Tpmetal]

dunno, someone will chime in. its either something like chert or a chunk of glass i would think. where are you from?

 

[digger460]

It's green! Sorry. Interesting find

 

[d2]

I think it's glass slag. Purty though...d2

 

[4x4x4]

Have a black Light available ? Uranium glass ?

 

[ecmjamsit]

yeah don't carry it around in your pocket, or keep it under the seat of your car...

 

[bradyboy]

glass slag IMOP

 

[hvacker]

I see you have saltillo floor tiles. Must live in the SW.
Next to certain you don't have a rock.