miniturature tool or shamans stone?

[duffytrash]

found on the banks of the ohio river...sorry a couple of the pics a little dark

 

[ohioaxeman]

i agree with bigc. we have piles of deburring stones at work... in the shape of pyramids about 1/4" on all sides... first one i ever seen was on break outside... i thought i found the ultimate rock, only to find they ship them in for deburring!

 

[duffytrash]

lolol call this one solved then....