Newman, a gemologist and author of gem and jewelry guides, explains how to assess the quality of colored gemstones when buying and valuing gems. She covers shape and cutting style, carat weight, color, clarity and transparency, cut quality, star and cat's-eye stones, treatments, synthetic stones, and deceptive practices, followed by descriptions of specific gemstones, with broad price ranges, and tips on caring for gems. This edition has 323 new color photos and new gem species and varieties. Annotation ©2016 Ringgold, Inc., Portland, OR (protoview.com)
