This is a 3D model of an Promicroceras ammonite fossil.
The original object was a gift from my mother when I was a child.
The central coils are filled with honey yellow calcite and are translucent.
Most likely it originates from the southwestern coast of England, probably from the area around Dorset.
Dating: Lower Jurassic Period, c. 200-174 mya (million years ago)