It makes a “clink” when tapping it on glass or metal. Or with a finger nail. Found on a river bed in Wisconsin.



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Does it pass the lick test?
https://shop.minimuseum.com/blogs/articles/can-i-lick-it-yes-you-canI don’t see tree rings, and the shape looks correct for a split bone missing the marrow.
Looks like bone to me
I’d guess it’s petrified bone.




