Crystal Agate &reg;Rainbow Natural Iridescent Ammonite Polished Fossil Specimens From Madagascar -1 Pc 100% Natural Polished IRIDESCENT Ammonite Fossils These ammonites are roughly 200 million years old! Average Size:1..2" to 1.6" Includes an an "Ilove crystal" Refrigerator Magnet Includes A Crystals agate Properties Information Card