Probably nothing, but curious

[grasshopper]

Found on the shore of lake champlain in upstate NY.

Any thoughts? It's pretty light, but the perfect hole is interesting....

 

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[ToddsPoint]

That's drilled. You can see the concentric lines in two of the pics. Gary

 

[Indian Steve]

I don't think it is the right kind of rock, but crinoids leave the same lines when they decay out of the rock.

 

[Rookster]

That's interesting. Nice find.

 

[arrow86]

The shape of the rock and the visible drilling marks would make me keep it and think it was a necklace / charm. I think it’s an artifact but see what others say

 

[georgia flatlander]

I'd say it was drilled. Very cool!