Colored Gemstones 3/E : 9780943763729 : 17 Jun 2010 : Newly updated and expanded, COLORED GEMSTONES gives you all the information you need to buy, collect, sell? or simply enjoy?sapphires, emeralds, rubies and other colored gemstones with confidence and knowledge. With more varieties than ever before to choose from, including altogether new gems, revolutionary new cuts and new ways to buy gems?such as Internet auctions and TV shopping?there has never been a more exciting time to buy or collect colored gemstones. But there are also new high-tech treatments and sophisticated frauds to look out for. Lack of information, error or misrepresentation can make the thrill of buying a gem or piece of jewelry confusing, intimidating, overwhelming and costly. Buyers need a source of expert guidance. This practical, comprehensive, easy-to-understand guide provides all the information you need in order to know what to look for, and what to look out for, including: What qualifies as a "gemstone"?