Ammolite Colors

The color present in Ammolite is caused by light interference during refraction into the many layers of the gemstone. Each color in Ammolite represents a different layer of the gem material. So, depending on the number of fine layers in the rough, everything from one color to the full visible spectrum will be displayed. Since the play of light varies, every Ammolite gem shows a unique array of color.

Ammolite Grading

The natural hardness of Ammolite is 3.5 to 4.0 on the Mohs scale. However, iAMMOLITE covers the delicate Ammolite gem layers with a protective spinel crystal, increasing the hardness to an exceptionally durable 8.0.

Ammolite Gems

Origin of Ammolite

Ammolite is formed from an ancient marine fossil called ammonite. Although sources of ammonite exist in other locations around the globe, it is only in one isolated region of Southern Alberta, Canada, that this deposit produces the gemstone Ammolite. Seventy million years of tectonic pressure, heat and mineralization have resulted in theformation of this geological wonder.


In 1981, ammolite became recognized by CIBJO, (the Colored Stones Commission.) It is the latest of only three new gemstones introduced in the last 50 years.

How Ammolite is Measured

Ammolite is measured in millimeters (mm). There are 25 mm in 1 inch.

The Free form Ammolite stone being measured below is 40 mm at its longest point and 30 mm wide.