Is ammolite rare?

Yes! Ammolite is widely considered one of the rarest gemstones on Earth. Unlike most gemstones, its rarity is not simply a matter of limited supply. Ammolite is rare because of a remarkable combination of geological events that occurred over tens of millions of years and in only a very small region of the world.

Found in Only One Place

Gem-quality Ammolite is found almost exclusively within the Bearpaw Formation of Southern Alberta, Canada. While ammonite fossils occur on every continent, only a small percentage contain the vibrant iridescent shell material that can be cut and polished into gemstones.

This means that although ammonites themselves were once abundant throughout the world's oceans, the conditions required to preserve their shells as gemstone-quality Ammolite were extraordinarily uncommon.

A Fossil Gemstone

Unlike diamonds, sapphires, or emeralds, Ammolite is not formed deep within the Earth. Instead, it originates from the fossilized shells of extinct marine animals known as ammonites that lived roughly 70–75 million years ago during the Late Cretaceous Period.

When these creatures died, their shells settled onto the floor of a warm inland sea that once covered much of present-day Alberta. Under very specific conditions, portions of the shell escaped destruction and retained their original aragonite layers. Over millions of years, those layers became fossilized while preserving the microscopic structure responsible for Ammolite's spectacular colours.

Because Ammolite originates from fossil shells, the supply is completely finite. No new Ammolite can ever be formed. Every gemstone available today comes from an animal that lived millions of years before humans existed.

Only a Small Percentage Becomes Gemstone Material

Finding an ammonite fossil does not guarantee finding Ammolite.

Many ammonite shells contain little or no gem-quality material. Others may display colour but are too weathered, fractured, thin, or unstable to be cut into gemstones. Even among shells that contain high-quality Ammolite, only certain portions may be suitable for jewelry or collectors' pieces.

As a result, only a small fraction of recovered ammonites ultimately produce gemstones.

Some Colours Are Rarer Than Others

Not all Ammolite colours occur with the same frequency.

Red and green are the colours most commonly encountered, while blue and purple are considerably rarer. These colours form from thinner aragonite layers and are often found near the outer surface of the shell, where millions of years of weathering can destroy them before the fossil is ever discovered.

Stones displaying multiple colours at once are often especially prized. Specimens showing strong blues, purples, pinks, or a full spectrum of colours are among the most sought-after examples of Ammolite.

Every Stone Is Unique

No two pieces of Ammolite display exactly the same colours, patterns, or iridescence.

Differences in shell structure, fossilization conditions, mineral preservation, and weathering create an endless variety of appearances. Some stones display broad flashes of colour, while others reveal intricate mosaic patterns, dragon skin textures, stained-glass effects, or vibrant multicolour displays.

This means that every piece of Ammolite is genuinely one of a kind.

A Rare Piece of Alberta's Natural History

Ammolite occupies a unique place among gemstones. It is simultaneously a gemstone, a fossil, and a piece of Alberta's geological history.

Its combination of geographic exclusivity, finite fossil origin, vivid natural colour, and individuality has earned it recognition as one of the world's rarest gemstones. For collectors and jewelry enthusiasts alike, owning a piece of Ammolite means owning something that cannot be replicated, manufactured, or replaced—an ancient natural treasure preserved for over 70 million years.