High in the Himalayas, many people believe that ammonite fossils are embodied gods (especially if they are collected from sacred valleys during a pilgrimage). An anthropologist based in the United States is publishing the art of interpreting these stones and how to detect the fakes offered to the poor but pious who can't make the trek themselves or want a different god
http://www.peregrinationblog.com/ One of the five major colours is recommended to be only used by the very experienced because of its destructive energy.