Washington is becoming known for its nephrite jade, which is found in several streams and mountainsides in three areas in the Northwest Washington. This book provides the information to help you learn what the jade looks like and how to recognize it when you are out rock hunting. The history and science of jade is explained in a straight forward manor. Along with the jade information, several gem rocks (vesuvianite, grossular, listwanite, and others) that occur with the jade are also described.