Just a heads up: My wife and I are away for a week and a half on a much-needed vacation. Orders placed now will ship
on November 17. Thank you for your patience and understanding!
This 1.93" cut & polished agatized ammonite fossil comes from Madagascar. Cutting and polishing reveals the spiral of mineral-filled chambers hidden inside the shell.
Age: Early Cretaceous, about 110 million years old
Condition: Natural fossil, professionally polished, no artificial color
Specimen #: 2264
About This Specimen
This specimen shows beautifully preserved internal chambers filled with agate and silica-based mineralization. The photos show the exact specimen you will receive.
About Cut and Polished Ammonites
Ammonites were shelled marine relatives of squid and octopus that lived for more than 300 million years before dying out with the dinosaurs. As an ammonite grew, it added new chambers to its shell, sealing off the old ones with thin walls. When the shell fossilized, minerals like calcite and agate often filled those chambers. Cutting an ammonite in half and polishing it reveals that hidden spiral of chambers, along with the wavy suture lines where each wall met the outer shell. Our cut and polished ammonites come from Early Cretaceous deposits in Madagascar, about 110 million years old.
Where This Fossil Comes From: Madagascar
Madagascar's ammonites come from Early Cretaceous marine rocks, about 110 million years old, in the northwest of the island near Mahajanga. Ammonites from these deposits often preserve their original aragonite shell, which is what gives them their natural color and shine, and many have chambers filled with calcite or agate. They are collected locally, then cleaned, cut, or polished to reveal the shell.
Authenticity Guarantee. Every fossil at Fossil Driven is hand-selected, photographed individually, and described with more than 13 years of fossil identification experience. Any repair or restoration is always disclosed. Each specimen is backed by our authenticity guarantee and 30-day return policy.
