Just curious what this is, prob nothing special

[Charlieee]

It's all black and really smooth idk just wanted to know what it's called, maybe just a rock?

Thanks

 

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[boris]

obsidian used for arrowheads and ballast, HH Boris

 

[tamrock]

obsidian used for arrowheads and ballast, HH BorisView attachment 961449View attachment 961450

boris, Dude!... What the heck is that spiral looking thing on the top of your photo? Is it a piece of jewelry?. If so? It has a look of jewelry that was produced the artist Alexander Calder. If that be the case you hit the jackpot. Read hear on a Calder piece found at a flea market for 15 bucks. I know the odds of finding something like that are the stuff of dreams, but those things do happen. I don't believe most Calder jewelry was ever signed, but maybe some were.
Calder Necklace Found at Flea Market for $15 Goes Under Gavel - ArtfixDaily News Feed

 

[flyadive]

Is it magnetic?

 

[tamrock]

It's all black and really smooth idk just wanted to know what it's called, maybe just a rock?View attachment 961433View attachment 961434View attachment 961435

Thanks

It looks metallic?

 

[coinbug]

Piece of chert smoothed up a bit in a stream bed? Doesn't look like obsidian to me.