One of a kind 52.85ct Ammonite Fossil cabochon

This exquisite fossil has been expertly cut to reveal a stunning Fibonacci sequence, showcasing well-defined chambers adorned with druzy crystals. Both sides of this fossil have smooth cabochon cuts and measuring approximately 35.3mm x 28mm x 6.4mm, this remarkable piece has great size. Originating from the Cretaceous era, it dates back approximately 100 million years and was sourced from Madagascar.