hi /out/ this was in my backyard. no idea what it is. maybe

>>980437
>rock.jpg

Found the answer for you, faggot.

>>980437
Looks like slag glass.

>>980439
but what KIND of rock

>>980440
i think it kinda looks like amber but im not sure desu

>>980437
Looks like melted glass man, nothing valuable but still cool nonetheless.

>glass vs amber
try to scratch the back of a spoon. amber won't, glass will. won't confirm either, but will rule one out.

fwiw my money's on glass, too.

>>980437

looks like obsidian, but I don't think obsidian is usually that colour... I think the above poster has it right; slag glass.

>>980437
>>980440
>>980552
It is a beer bottle, or part of one, that was melted in a fire.

>>980437
Fossilized cola. Given the blue residue on the outside, I'd guess Pepsi or Royal Crown.

>>980437
Looks like amber

Sell it or polish it and keep it. It's quite a big chunk