Great ceremonial grooved barbed ax circa 6000 to 9000 YO. from  Michigan. 
The Axe is made from a beautiful,Green stone material hand pecked with a beautiful hand polished patina and amazing color.  It has been examined by several experts and comes with a 14 day return privilege just pay ship.  This ax has been in  at least 3 other collections before it came to me has other old collection tags. See photos for your own expert opinion. If on vacation come to the Bearfighting Blakely Indian trading post in Cherokee N.C. 
just over the Mountain from Gatlinburg Tennessee.
See photos for your expert opinion.