Jeweler's Resource: Revised Edition by Bruce J. Knuth

This book has become a standard reference in the jewelry industry. It is a unique and practical tool for the bench jeweler and jewelry student as well as the most complete counter reference available to the retail jeweler. Includes an extensive listing of gems and gem properties, complete lists of birthstones and birthstone alternatives, diagrams of more than forty gem cutting styles, diamond grading standards and gemstone care, and much more. 134 pages.