Alberta, Canada Iridescent ammonites are found along the eastern slopes of the Canadian Rockies, in a locality famous for its brilliantly colored fossil ammonites. Formerly confused with opals, ammolite is actually composed of aragonite and not silica. Known as the Canadian national gem, ammolite, it is one of only three biogenic gemstones known to exist (the other two being amber and natural pearls.) Ammolite is hand cut using the same techniques as opal cutting. The present bracelet consists of eighteen oval ammolites, each topped with a quartz cabochon, faceted in a star pattern which adds a great deal of scintillation to the stones, bezel-set in rhodium-plated silver, length 7 1/4 in