Yeah I agree, definitely a worked stone, hopefully it's not a hoe though! Haha, doesn't make for a good story at all! Lol. But it is what it is in the end right? Still awesome!
If i took this to a museum would they force me to give it up?
Looks like large hoe, when you post pictures always helps to post known object for size reference, maybe ruler... We don't know if your 5' or 6' 6" so picture on leg doesn't help much