This book, designed for the gemmologist or serious amateur, details the identification of Jade. It covers in detail Nephrite Jade and Jadeite, its formation, geology, simulants, distinguishing features, treatments, grading, diagnostic optical and physical properties, readings under various gemmological equipment, locations found, colour range, various effects associated with Jade, crystallography, various names used and more. This book will greatly assist those wishing to find out more about how to correctly identify jade. This book may also prove useful to the gem fossicker in the field.