Approx. 39.8 x 24.3 x 4.9mm, approx. 39.1ct, iridescent green, orange and light red tones. Ammolite is a rare opalescent gemstone. It is found mainly on the eastern slopes of the Rocky Mountains and consists of the fossil remains of Ammonites. Ammolite or corite are highly sought after and traded stones in this quality (https://www.cortrie.de/go/Z9w).