Sphere (Ammonite) | Barras-Gautier-Min.https://static.wixstatic.com/media/daf8af_1c4789236f254fd8a5a42a9083294446~mv2.jpg/v1/fit/w_500,h_500,q_90/file.jpg Diameter 4cm Origin: Madagascar Natural Ammonite Sphere. The polishing work has kept the unusual and the original figuration of this ammonite while highlighting them.