Ammolite is a rare gemstone that is created through the precise fossilization of the mineral aragonite. Ammolite only formed in the fossils of placenticeras ammonites and only found in the Bearpaw Formation in the Rocky Mountains of Alberta. The bright colors of the gem comes from varying thicknesses or aragonite. Reds and greens are most common, while blues and violets are rarer.
Period: Devonian - Cretaceous period
Age: 240 - 65 million years old
Size: Shale 19 x 22 and 10 x 12 Ammolite - Ammonite