The most practical and informative reference book for the jewellery trade, The Retail Jeweller's Guide provides all the information on necessary areas of product knowledge required by the professional jeweller.It is also an invaluable text for all students studying for the NAG JET and NAG Gemmology courses, and the new summary and learning section will enhance the textbook elements of this new edition. Also included are an entirely new chapter on the appraisal of jewellery and one on gemmological instruments.