stone faces

last rock you'll ever see Color: deep black Appearance: deep black with quartz stripes, smooth, lustrous Shape: rhombus Material: crystallized carbon Hardness: very hard Specific gravity: 2.6 Weight: 38g Any comments, thoughts or ideas?

I found this in a creek while mushroom hunting last spring. I thought is was fossils that made this rock cool but I think man altered this. To me it looks like a mask of a human and a bird. THen you have atleast 3 other markings on it that look man made to me. any help or direction would be awesome.