This striking Cleoniceras ammonite fossil from Madagascar features a beautifully preserved spiral shell with rich natural colouration and eye-catching red calcite chamber infill, making it a standout polished ammonite fossil display piece.
 
The surface is covered in intricate, fern-like suture patterns, a defining feature of high-quality Cleoniceras ammonite fossils, set against a deep backdrop of earthy browns, burnt orange, and reddish tones. What makes this Madagascan ammonite fossil particularly unique is the presence of glowing red and orange calcite-filled chambers, adding depth, contrast, and visual interest across the shell.
 
Expertly polished to enhance clarity and detail, this spiral ammonite fossil reveals both the external shell patterning and internal fossil structure, including the partially exposed central chamber. The natural variation in colour and mineralisation gives this collector ammonite specimen a bold and dynamic appearance.
 
With its combination of classic ammonite structure and vibrant calcite infill, this large ammonite fossil display piece works beautifully as a centrepiece for interiors, a talking point in any space, or a standout addition to a fossil or crystal collection.