Here’s why ammolite gems have a rainbow shimmer
Ammolite fossils’ fabulous colors arise from delicate assemblies of crystal plates.

Science News Explores reports on Here’s why ammolite gems have a rainbow shimmer
ammonites: A group of extinct cephalopods known as ammonoids. Distantly related to squids and octopuses, these sea creatures lived from about 415 million years ago until the end of the Age of Dinosaurs, roughly 66 million years ago. Ammonites had a f...

