Iridescent Madagascar Ammonite - Cretaceous: 100 mya
Iridescent Madagascar Ammonite - Cretaceous: 100 mya
Iridescent Madagascar Ammonite - Cretaceous: 100 mya
Iridescent Madagascar Ammonite - Cretaceous: 100 mya

Iridescent Madagascar Ammonite

Cretaceous: 100 mya

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Ships in 3 - 6 days within the US. Orders of $50 or more ship free!

Includes info cards and Certificate of Authenticity.

Your purchase will match the quality of the items shown.

Origin: Discovered in the Mahajanga province of Madagascar, these ammonites have taken on a brilliant, rainbow iridescence. This is the result of an opal-like layer known as nacre (or mother of pearl), which is the same type of substance that gives the inside of modern oyster and abalone shells their rainbow hue. Under the right conditions, chalky sediment can preserve the nacre found on ammonoid shells during the fossilization process—leading to a beautifully colored fossil.

Ammonites are the fossilized remains of ammonoids, a group of extinct mollusk-like animals that are most closely related to squids and cuttlefish today. These creatures filled earth's oceans for over 340 million years until they vanished, along with the dinosaurs, in the mass extinction event at the end of the Cretaceous period.

Our iridescent ammonites measure approximately 1 inch to 2 inches in diameter. Though they may have some minor chips or scratches in their iridescent coatings, each is almost entirely complete. A Certificate of Authenticity is included.

Frequently Asked Questions

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Artists rendering of an ammonoid (via Wikimedia)

Your order will include:

  • One iridescent ammonite, approximately 1 to 2 inches in diameter
  • Glass top leather display box
  • Detail card with relevant information about the relic
  • Certificate of Authenticity


History Hoard relics are guaranteed authentic and have a 100% money back policy. Read more about the History Hoard Promise. 

Frequently Asked Questions:

Your Certificate of Authenticity is more than just a piece of paper—it's a promise to you.

When you buy from History Hoard, you can rest assured that each of your new relics has been thoroughly inspected under the careful eyes of an antiquities specialist. Only items that are 100% certain to be authentic get sent to our customers.

Plus, we take great care to source our relics from only vetted antiquities experts, who are also committed to providing genuine and ethically sourced relics.

Check out this video to see the most basic things we look for when authenticating coins:

To read more about our promise to you, click here.

Actually, many relics are able to be owned by anyone.

Typically, museums only want to display items that are either very rare or incredibly well preserved. This leaves many items that don't make the cut, and these are able to be owned by individuals.

While the items we sell aren't "museum grade," they still carry with them the same amount of history and uniqueness. Each relic was still hand made by a person, hundreds or even thousands of years ago.

One of our core values is not to damage or alter any of the artifacts we sell.

History needs to be preserved—after all, there is a limited amount of it that survives—but it is also something to be shared with the masses. For this reason, we put our relics in sturdy display cases that are safe to handle, but are mindful that someday the relic may need to be taken out again.

No glue or resin holds the items in place. Instead, we're developed our own method for holding the relics securely in their displays using pressure alone. In fact, any of our relics can be removed in their original condition by simply opening the display case.

You can find our complete FAQ section here.