pyritised russian ammonites


Perisphinctes kosmoceras ammonites

From the Volga river, Ulyanovsk region, Russia

Circa 153 million years old.




Product Description

Very striking examples of these small cut and polished perisphinctes kosmoceras ammonites. During the fossilisation process, the entire body of the ammonite has been replaced with the mineral Iron Pyrite, giving them their distinctive golden colouring.

Mounted on an argillite matrix with calcite and pyrite.

From the Volga river, Ulyanovsk region, Russia.

Jurassic, circa 153 million years old.

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Approximately 4cm x 4cm.


Additional Information

Weight 121 g
Dimensions 4 x 4 cm

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