Ammolite Jewellery in Calgary — Alberta's Official Gemstone Explained by VJ Jewellers Ltd. / VJ Jewellers

What Is Ammolite?

Ammolite originates from the fossilized aragonite shells of ammonites — ancient cephalopods that flourished in the warm prehistoric inland sea that covered western Canada over 70 million years ago.

Over millions of years of geological tectonic pressure and mineralization, the shell material was transformed into an extraordinary iridescent mineral layer. The world's finest commercial gem-quality deposits occur almost exclusively along the St. Mary River in southern Alberta, leading the Province of Alberta to designate ammolite as its official gemstone in 2004.

Why People Love It

Ammolite displays dramatic play-of-colour that shifts and dances as light strikes the gemstone from different angles. Radiant reds, oranges, yellows, emerald greens, and golds are the most prevalent, while vibrant royal blues and deep violets are rare and highly sought after by collectors.

Because the rainbow color is produced through optical light interference within micro-layers of aragonite rather than chemical pigment, every single ammolite gemstone possesses a unique optical fingerprint.

What Affects Quality and Price

Gemological value and price in ammolite are determined by key criteria:

• ✔ Color range and chromatic intensity — stones displaying multiple vibrant spectral colors command premium prices.
• ✔ Surface coverage — the percentage of the gem face showing vivid, continuous iridescence.
• ✔ Pattern structure — ribbon, stained glass, fractured sheet, and dragon-skin patterns.
• ✔ Thickness and layer condition — thickness of the aragonite gem layer.
• ✔ Cut and finish — smooth cabochon polish and protective clarity.

Natural Stones, Doublets and Triplets Explained

Because natural ammolite gem layers are brittle and relatively thin (Mohs hardness of approximately 3.5 to 4), jewelers frequently assemble them for durability:

A doublet consists of a natural slice of ammolite bonded to a dark protective shale backing. A triplet adds a crystal-clear protective cap of optical quartz or synthetic spinel over the top face. Triplets provide superior scratch resistance and impact protection, making them by far the most practical choice for wearable fine jewelry. Always ask for written descriptions confirming whether an ammolite is natural, doublet, or triplet.

How to Care for Ammolite Jewellery

Ammolite is delicate compared to diamonds or sapphires. Never clean ammolite using ultrasonic jewelry cleaners, steam cleaners, or chemical solvents. Clean only with a soft, lukewarm damp cloth.

Because rings are exposed to frequent knocks, pendants and earrings are generally the safest and most durable ways to wear ammolite every day.

Is Ammolite a Vedic Gemstone?

No. Ammolite is not one of the traditional Navratna planetary gemstones used in Vedic Jyotish astrology. If you are seeking an astrological gemstone to balance planetary influences, consult with your Jyotishi first and explore our certified Vedic gemstone guides.

Buying Ammolite Jewellery in Calgary

Ammolite makes a distinctive Canadian gift, corporate keepsake, or treasured remembrance of Alberta.

If you are interested in ammolite or would like a bespoke setting designed around an ammolite stone, ask us about custom sourcing and gold mounting at VJ Jewellers Ltd. / VJ Jewellers. We also offer expert jewelry appraisals for family gemstone pieces.