One of a kind 15.85ct Ammonite Fossil cabochon pair

This exquisite fossil set has been expertly cut to reveal a stunning Fibonacci sequence, showcasing well-defined chambers adorned with druzy crystals. Both sides of these fossils have smooth cabochon cuts and measuring approximately 19mm x 14mm, this remarkable pair has great size. Originating from the Cretaceous era, they dates back approximately 100 million years and were sourced from Madagascar.