An ammolite ring featuring a multi-color ammolite cabochon bezel-set in a simple sterling silver ring. This one flashes mostly green with some yellow Made of the fossilized shells of ammonites, ammolite is an organic gem-quality fossil with an opalescent flash. Mined in Alberta, Canada, it is composed mainly of aragonite. Gemstone approx: 12 mm H x 7 mm W x 4 mm D Size 5 only.