Ammolite: The Rarest Gem You’ve Never Heard Of

When I show people an ammolite ring, they almost always ask the same two questions. “Is that real?” and “What is it?”

Yes, it’s real. And it’s one of the strangest, rarest gem materials on earth.

What ammolite actually is

Ammolite comes from the fossilized shells of ammonites, sea creatures with spiral shells that lived in a shallow inland sea that once covered part of North America. They’re around 70 million years old. The dinosaurs were still around.

Over millions of years, the shell layers were buried and pressed, and some of them kept their original structure. That structure is what makes the color.

Why it flashes like that

Ammolite isn’t colored by a pigment. Its color comes from thin layers in the shell that bend and split light, a bit like a soap bubble or an oil slick. Turn it and the colors shift: red, orange, green, gold, and sometimes the rare blues and purples.

The fine cracks between the color patches have names of their own. Collectors call them “dragon skin” or “stained glass” patterns. Some of my favorite pieces have them. A perfect, crack-free ammolite would be a little boring.

Why it’s so rare

Gem-quality ammolite is mined commercially in essentially one place: a small area of southern Alberta, Canada, along the eastern slopes of the Rocky Mountains. Ammonite fossils are found all over the world, but the ones that keep this kind of color are extremely limited.

It was officially recognized as a gemstone in 1981, and in 2022 it became Alberta’s official gemstone. So it’s both ancient and brand-new to the jewelry world.

Diamonds are mined on several continents. Ammolite basically comes from one valley. That’s why I call it the rarest gem you’ve never heard of.

Solid, doublet, or triplet?

This is the part sellers don’t always explain.

• Solid ammolite is the natural material, sometimes still sitting on its original matrix.
• A doublet is a thin layer of ammolite backed with another material for strength.
• A triplet adds a clear protective cap on top, often quartz or spinel.

None of these are “fake.” Ammolite is fragile, and doublets and triplets make thin layers wearable. But you should always know which one you’re buying. Ask. A good seller will tell you without hesitating.

How to care for ammolite

Ammolite is soft, around 3.5 to 4.5 on the hardness scale, which is softer than most gems you know. So:

• No soaking. Water can get into the layers, especially in doublets and triplets.
• No chemicals. Skip the silver dip, perfume and cleaners.
• Wipe it with a soft, dry cloth.
• Take it off for the gym, gardening and dishes.
• Pendants and earrings are easiest. Rings are beautiful but need a bit more care. A bezel setting helps protect the edges.

Why I keep coming back to it

I’ve worked with a lot of stones. Ammolite is the one I can’t stop looking at. No two pieces have the same colors or pattern, so every design has to start from scratch. It forces me to listen to the stone.

And there’s something about wearing a 70-million-year-old sea creature on your finger that makes a Tuesday feel less ordinary.

See my ammolite rings and pendants, including the Ammolite Triangle Pendant, each built around one stone that will never exist again.

Had you heard of ammolite before today? Be honest.