A highly pyritised ammonite fossil of the species Promicroceras pyritosum from the world-famous Jurassic Coast beach of Charmouth, Dorset UK.
The fossil measures 15 mm (0.6 inches) across, which is small for this fossil type and so perfect for jewellery. The ammonite is beautifully preserved on both sides. The ribs are very finely defined and the golden colour is beautiful. There is a bit of the outer whorl missing that is most likely due to a bite from a predator in the Jurassic seas that killed the ammonite. A great example of the species and incredible in the flesh.
These pyrite ammonites have long been used to make beautiful natural jewellery.
Around 196 million years old, this fossil would make a wonderful addition to any collection.