An ammolite pendant featuring a rainbow-colored ammolite fossil cabochon bezel-set in a simple sterling silver pendant. Ammolite is an organic gem-quality ammonite fossil with an opalescent flash containing a rainbow of colors. Mined in Alberta, Canada, it is composed mainly of aragonite. Stone approx: 15mm H x 9mm W x 4mm D Need a chain? We have a selection of chains here.