Item #40718 Ammolite RingSuper rare Ammolite set in Sterling Silver. Ammolite is the lining of fossilized ammonites and is found only in Alberta. It is highly iridescent, and it is difficult to catch the fire in the gem with just the camera. They are much like opals. These fossils are usually only found in tiny pieces but this one is larger than most and measures about 7/8" x 1". Size about 9 1/2 - 10. $115.