Jeweler's Resource: a Reference Of Gems, Metals, Formulas and Terminology for Jewelers, Revised Edition, Spiral Bound, By Bruce G. Knuth | PUB-120.00 Great reference in the jewelry industry Spiral bound book 112 pages; English 10.6 by 7.4 by 0.3 inches ISBN-10: 0964355035 and ISBN-13: 978-0964355033