Silver/Grey Ammonite Fossil – Whole Spiral Shell with Iridescent Shimmer – Cretaceous, Madagascar – 100% Genuine with Certificate

Description This listing features a stunning silver/grey whole ammonite fossil, dating to the Cretaceous period, approximately 100 to 145 million years ago, and found in the fossil-rich layers of Madagascar. These fossils represent an extinct group of marine molluscs that once dominated the world’s oceans for over 175 million years. Ammonites are best known for their distinctive spiral-shaped shells, making them one of the most recognisable and sought-after fossils globally. Despite their outward resemblance to snails, ammonites were cephalopods, more closely related to modern squid, octopuses, and cuttlefish. Their coiled shells consisted of a series of internal chambers used to regulate buoyancy, allowing them to move efficiently through prehistoric seas. This particular specimen displays a natural pearlescent shimmer, a feature that results from the fossilisation process and mineral content of the shell. The outer surface reflects light in silver, grey, and sometimes subtle rainbow tones, making it especially attractive as a display piece or collector’s item. Geological Context: Sourced from Madagascar, a country famed for its exceptional fossil preservation, this ammonite was formed in shallow tropical marine sediments during the Cretaceous. These seas were home to diverse marine life, and Madagascar’s fossil beds preserve ammonites in superb detail and condition. Key Details: Specimen: Whole Silver/Grey Ammonite with Iridescence Fossil Type: Ammonite (extinct marine cephalopod) Age: Cretaceous Period (~100–145 million years ago) Location Found: Madagascar Condition: Naturally preserved with pearlescent finish Authenticity: 100% genuine fossil, supplied with a Certificate of Authenticity Scale: See 1cm scale cube in the photo for size reference Photo: You will receive the exact specimen shown Scientific & Display Value: Ammonites are highly prized both for their paleontological significance and their natural aesthetic appeal. This specimen is ideal for fossil collectors, natural history enthusiasts, or as a stunning decorative item with ancient origins. The silver/grey pearlescence enhances its beauty and makes it a unique conversation piece. All of our Fossils are 100% Genuine Specimens & come with a Certificate of Authenticity! Fast & Secure Shipping – Professionally packaged for safe delivery. Add a shimmering relic of ancient marine life to your collection with this authentic silver/grey ammonite fossil from the Cretaceous of Madagascar.