By strange coincidence and only on rare occasions, fossil bones from the Early Cretaceous period (115-100 million years) have been found which have been replaced opal. In exceptional circumstances the opal can exhibit a brilliant play of colour.
Opalised remains from the “Age of the dinosaurs” have been important for understanding past environments and the evolution of the strange creatures that still exist in Australia today.
At cosmopolitan Jewellers, you can find a beautiful collection of Opalised Fossil Seashells, Belemnite and Opalised Fossil Wood. Visit their luxurious showroom in the heart of The Rocks Sydney.