Ancient! 13.39ct iridescent flashing split Ammonite set

This split ammonite originates from the Cretaceous era, making it about 100 million years old! Ancient iridescent opal adorns the outer shell with rainbow and red flashing, while its split interior displays a gorgeous Fibonacci swirl. This set measures about 20mm x 15.6mm x 3.4mm and it was sourced from Madagascar.