Ammolite Sterling Silver ring, featuring a vibrant, iridescent ammolite gemstone

Ammolite Sterling Silver ring, featuring a vibrant, iridescent ammolite gemstone, size 4. Ammolite is a rare, iridescent gemstone formed from the fossilized shells of ammonites, ancient marine mollusks. It is primarily found in the Bearpaw Formation in Alberta, Canada. The gemstone's striking colors, often displaying shades of green, blue, yellow, and red, are due to the interference of light reflecting off the stacked layers of aragonite platelets within the fossilized shell. When set in sterling silver, it creates a distinctive piece of jewelry.