Ammolite aka Korite aka Opal-Ammonite is the rare occurrence of petrified iridescent Nautilus shell from 70-80 million years ago in Alberta, Canada. Found exclusively in the Bearpaw Formation in the northern Rocky mountains, Ammolite is one of the most rare fossils in the gemstone trade. Our strength is the mosaic ornament of genuinely colorful Ammolite combined with other fossils, please also get to know Starborn's sophisticated Ammonite Inlay collection.