The most practical and informative reference book for the jewellery trade, the updated Retail Jeweller's Guide provides comprehensive information on necessary areas of product knowledge required by the professional jeweller, including the latest jewellery valuation courses and the e-retail marketplace. Gemmological instruments chapter has been expanded to include the polariscope and dichroscope, and the Chelsea and Hanneman Hodgkinson Filters. It is an invaluable text for all students studying for the NAG JET and NAG Gemmology courses. Revised by Eddie Stanley who has been associated with the jewellery trade education provision for over fifty years.