Manuel Quiring

Fossils Auction

The color intensity isn't showcased in these photos; it's truly vibrant. Ammolite is a biogenically derived ornamental gemstone with a reddish-green and iridescent appearance. It comes exclusively from the eastern part of the Rocky Mountains, in Canada and the United States. It derives from ammonite fossils (70 million years old), from Placenticeras of the Bearpaw Shale geological formation. These fossils contain aragonite, the main component of nacre. It has been recognized as an official gemstone by CIBJO since 1981, the year commercial mining began. In 2004, it was designated the official gemstone of the Province of Alberta, Canada. In jewelry, ammolite even rivals opal.

L'intensité des couleurs n'est pas mis en valeur sur ces photos, elle est vraiment flamboyante.
L'ammolite est une pierre ornementale d'origine biogénique, d'aspect rouge-verdâtre et irisé. Elle provient exclusivement de l'est des Montagnes Rocheuses, au Canada et aux États-Unis. Elle est issue de fossiles d'ammonites (70 Millions d'années), des Placenticeras de la formation géologique de Bearpaw Shale. Ces fossiles contiennent de l'aragonite, soit le composant principal de la nacre.

Elle est considérée comme une gemme officielle par la CIBJO depuis 1981, l'année qui a vu commencer son exploitation commerciale. En 2004, elle a été désignée comme la gemme officielle de la Province de l'Alberta, Canada. En bijouterie, l'ammolite rivalise même avec l'opale.

Our expert provides this estimate to guide you when you’re bidding. It’s based on expected demand and the unique characteristics of the object, like quality, rarity, or ownership history. We can’t guarantee the object will sell, resell or be appraised for this amount.

Ammolite Freeform - Height: 15 cm - Width: 9 cm- 750 g - (1)

Korite Mine, Calgary, Alberta, Canada

France

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Ammolite specimen from the Bearpaw Formation, Betina Korite mine, Calgary, Alberta, Canada, weighing 750 g with free-form mineral, measuring 15 cm high, 9 cm wide and 2 cm deep, notable for its biogenic origin from Placenticeras fossils in Bearpaw Shale and iridescent red‑green colour, officially recognised by CIBJO since 1981 and designated Alberta gemstone in 2004.

Ammolite Freeform - Height: 15 cm - Width: 9 cm- 750 g - (1)

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