Ammolite is a rare organic gemstone that comes from the fossilized shells of certain types of ammonites, marine mollusks that lived about 70 to 75 million years ago, at the end of the dinosaur era. This gem is mostly found in the Rocky Mountains of Canada, primarily in Alberta. Ammolite is distinguished by its bright and iridescent colors, ranging from red to green, blue, yellow, and even purple. These colors are due to the microscopic structure of the shell, which reflects light in different ways. It is prized in jewelry for its unique play of colors and rarity, being one of the few organic gemstones, alongside amber and pearl. *The shape and color vary according to the rings.