ok i didnt have time to tell you it has metal flakes inside and streaks of some kind of metal running throught it, also from a large box full of them i picked the 3 biggest . the guy was selling every fossil from morocco you could think of. said it was an old fall scatterd in the desert that was it. PS the one pix is a tiny quartz pebble stuck in the crack pretty cool maybe shows was laying in sand till found.