Large popped calcite Xipheroceras split ammonite display piece 25 These multi-ammonite assemblages (or 'death

These multi-ammonite assemblages (or 'death beds') occur when lots of shells came together on the seafloor before being fossilised together

which is turned into valuable gemstones due to the stunning iridescence

The shell sits in the original limestone matrix in which it was found that has been shaped for display

which displays some beautiful iridescence with the colours changing as the viewing angle changes with green

gold and copper that appear as the viewing angle changes

Large popped calcite Xipheroceras split ammonite display piece 25 These multi-ammonite assemblages (or 'deathA stunning example of an ammonite fossil of the species Xipheroceras dudressieri from the world famous Jurassic Coast beach of Lyme Regis, Dorset UK. The ammonite was found in a piece of limestone that was split open to reveal the both the positive cast of the ammonite and the negative impression of the shell. It can be put back together to be revealed as a surprise or with the two parts displayed separately. The two pieces of rock matrix measure 185