More than 1,500 full-color illustrations of all types of gemstones and hundreds of semi-precious stones accompany guidelines for identification and classification and articles on mining, cutting, and the properties and characteristics of each, in this newly updated edition.

"Gemstones of the World" is truly the single volume that every hobbyist, jeweller, jewellery maker and rockhound needs: it's the cornerstone of the field. And this updated edition contains a host of new findings on "Gemstones for Collectors," additional gems in the "Table of Constants" and the "double fraction" figures that experts have long wanted - a very special new feature. Over 1,500 full-colour photographs showcase stones in their rough, natural, and polished & cut renditions. Charts and tables help collectors identify unknown gemstones and check for genuineness.