Cleoniceras Ammonite – Beautifully Crystallized Pair An extraordinary pair of Cleoniceras ammonites, cut and polished to reveal the intricate geometry of their internal chambers. Many of the chambers are naturally filled with shimmering crystals, creating a striking contrast against the smooth mineralized walls. The reverse side of each half showcases delicate growth lines and subtle dendritic patterns, enhancing their visual depth and natural artistry. These ammonites, dating back to the Cretaceous period (around 110 million years ago), offer both scientific fascination and decorative elegance. Perfect for collectors, interior display, or as a refined educational specimen. Size and weight: – 320 g | 15.3 × 12 × 1.6 cm – 290 g | 15.5 × 12 × 1.5 cm Plastic display stands are included.