Sweet huge Ammonite with IRIDESCENT RAINBOWS ONE OF A KIND! When wet, these are even more rainbow spectacular! Cleaned & charged in our mountain stream. 5 1/2" x 4 1/2" x 1" 782g. Some of the rain bow is chipped, discounted by 20% in list price. Powerful Ammonite - This amazing specimen is a fossil from creatures that lived in the sea 240 - 65 million years ago. Ammonites are named after Ammon, the Egyptian god of life & procreation. He was always shown wearing rams horns which Discounted 5 1/2" Rainbow Ammonite Fossil, Large Opalized Ammonite