macro slices of opalized and pyrite ammonite, ammolite crystal silicate and fools gold silver metal fossil

ammolite ammonite fossil shell ammonoidea amonite ancient animal archaeology cephalopod cephalopoda close close-up closeup cut fossilized fossils gem gemstone geology iridescent isolated macro marine mineral mineralogy nature nautilus ocean old opalized paleontology prehistoric rock sea life seashell shellfish slice snail spiral stone swirl