Ammolite is the surface material – or shell - of ancient, fossilized mollusks known as ammonites. When light hits the many layers of shell it produces an iridescent sheen, as one sees in pearls and abalone shells. In the case of ammolite, the fossilization process has left traces of minerals embedded between the layers of shell. These actually diffract light and have somehow exaggerated the magnificent iridescence. Intense colours of the full spectrum flash across the fossil’s surface.
Ammolite for jewellery usually must undergo some form of treatment, such as lacquering with resin, to make it durable. This piece has been treated.