This 3rd Edition provides concise yet comprehensive information on coloured gem quality evaluation, price comparison, gem identification, cutting styles, treatments, fake stones, optical effects, gem care and geographic sources. Many of the gems are shown mounted in striking designer jewellery. There are 323 new colour photos and several new gem species and varieties in this new Third Edition. Also included are interesting historical facts mixed with scientific data and a bit of folklore. Written for consumers and professionals, the Gemstone Buying Guide is a practical, well-illustrated resource for buying, identifying and caring for coloured gems. If you want to become a savvy buyer and learn how to select coloured gemstones, then you will find the Gemstone Buying Guide a fascinating and valuable resource.