LOLLooks like balled up aluminum foil
Lol nope a little harder than that
Well it scratches glass and it's for what looks go be shards of glass in itHard to say without more info and photos.
Where was the general location it was found.
Do a Hardness test, a streak test, and a specific gravity test and give us the results, how to do these tests can be found online.
Then maybe we can give you a better guess.
You could also take it somewhere they have a handheld spectrometer, i. e. jewelry store, pawnshop or maybe a metal recycler and see if they will test it for you.