Very Rare actual Native American boat stone Artifact

Very Rare actual Native American boat stone Artifact. Found in Southeastern NC among other artifacts. Boat has a bow and a stern and sails. Brown body with smooth feel. Doesn’t feel like sandstone. But sail has green stone that does feel gritty like. When looking closely at bottom of boat and sail, it seems the entire boat seems to be made from a white stone then this brown and green was applied. Really hard and weighty stone. Could be a ceremonial piece or enjoyment. Measure 3-3/4″ high x 4-3/4″ long x 1-1/2 thick. Heavy and Weight is 1.13 pound.