beautiful iridescent colorful ammonite, called ammolite, from Canada

A free-prepared Ammolite from Alberta, Canada, with distinct iridescence and the brecciated shell structure typical of the species.

Ammolite consists of the iridescent aragonite shell of prehistoric ammonites. In the Upper Cretaceous Bearpaw Shale, the shell was transformed into its present opalescent form around 65 million years ago under pressure and mineralization.

Only a narrow geographical strip along the eastern slopes of the Rocky Mountains yields this quality, primarily in the St. Mary River basin.

The color development of the individual iridescent fields follows the layer thickness variation of the original shell.

Sealed with a synthetic resin layer to stabilize the thin aragonite layer.

A collector's item, suitable as an accent in a collector's display case.