Cleoniceras Ammonite Fossil with Hematite Mineralization and Pyrite Traces – Cretaceous – Madagascar Beautiful Cleoniceras ammonite from Madagascar, dating to the Cretaceous period (approximately 110 million years ago). This specimen has been carefully polished to reveal the intricate internal structure of the shell and the remarkable mineralization within the fossil. The surface shows an elegant dark metallic appearance caused by hematite mineralization, giving the ammonite deep tones of black, silver, and grey. The polish highlights the spectacular ammonite suture patterns, which appear as delicate, highly detailed natural fractal-like lines across the shell. Scattered across the surface are clear traces of golden pyrite, naturally deposited within the fossil. These pyrite inclusions create a striking contrast against the darker background and add both aesthetic beauty and geological interest to the specimen. The spiral structure is beautifully preserved and clearly visible, while the polished finish enhances the natural patterns and textures of the fossil. Cleoniceras ammonites from Madagascar are among the most appreciated decorative fossils thanks to their combination of elegant geometry, mineralization, and scientific significance. A very attractive piece for fossil collectors, mineral enthusiasts, or as a striking natural history display specimen. Display stand included.