With richly detailed artwork and diagrams, and superb color photographs, Gems of the World provides invaluable information for gemologists and jewelers alike on the world's most commonly occurring gemstones.

This edition has been revised and thoroughly updated. Changes and new features include updated maps of recently established diamond bourses and geographical country changes, plus new gem varieties and localities where they are found, new techniques for producing synthetic gemstones and simulants, and much more.

Alongside comprehensive text from leading gemologist Cally Oldershaw, Gems of the World provides:

• descriptions of more than 130 varieties of gemstone
• over 900 photographs of gems, crystals and jewelry
• more than 50 drawings and diagrams
• a color key to identifying gems
• world maps showing important gem locations and trading centers