Is this stone river-worn or......?

[satellite]

I found this stone on a bank of Mt.Fork River coming out of Broken Bow lake Oklahoma. I know it isn't an arrowhead and although I found it in a river, the shape, angles and surfaces are uncanny with a uniform thickness of about 3/8". Any opinions? Thanks!

[Felinepeachy]

Interesting. You may also want to post this in the American Indian Artifacts section and see what they say.

http://forum.treasurenet.com/index.php/board,89.0.html

[Rasputin]

Perhaps some kind of native american game/gambling piece but I think just a random stone.

[Adventure Wolf]

I think its just river worn. I've seen similar rocks in many rivers and streams when I rock hunt.

[crazifeather]

looks like an unfinished gorget. too symetrical to be natural

[minetres]

This is strange, I have one found here in New Mexico with a diffrent shape to uniform to be natural and it looks like the same material.

Minetres

[ohioaxeman]

looks like a tumbling stone. factories use them in tumbling machines to de-edge and smooth metal parts. i've seen many different styles including yours and also pyramid shaped.