This spectacular fossil ammonite with a red opalized layer displays fiery iridescence and exquisite natural preservation. Once a marine mollusk that swam the ancient seas, this ammonite’s shell has transformed over millions of years into a brilliant gemstone-like fossil. The red opalized surface shimmers with flashes of orange, gold, and crimson — a rare and highly sought-after feature among collectors. A perfect centerpiece for any fossil or mineral collection, this opalized ammonite is available now at The Katy Rock Shop.
