Coincidental find, not metallic. Appeared to be intentionally shaped and then broken. Iām not saying Native American artifact. The angle in picture #1 is perfect. The 2 sides from the angle are different lengths. Iāve used a lot of various polishing stones over the years; to remove a bur from steel, glass, etc. Some of these stones are: cylindrical, half-moon shaped, etc. The only issue with that; this piece is not abrasive. Any ideas? It may be ājust a rockā but Iām unwilling to go there immediately this time. Again, Iām in no way suggesting an artifact from ancient man. I know it is not. Thanks