Book excerpt: The perfect pocket-sized companion for those travelling and thinking about purchasing jewellery or stones. Renee Newman, author of the highly respected gem and jewellery guides including 'Diamond Ring Buying Guide' and 'Gold and Platinum Jewelry Buying Guide', has written a concise buying guide covering gems, gold and platinum that's a perfect handy reference. Here is important information on how to select jewellers and appraisers; a chapter on notable gem sources and which countries are noted for specific gems; information on coral, ivory and amber; precautions one must take when buying from an unfamiliar source; and customs regulations, duties and how to use lab reports. This guide will become an indispensable resource that will be used time and time again.