The listing, Gem & Jewelry Pocket Guide has ended.
By respected and well-known gemologist Renee Newman, this paperback book contains more than 100 color photos of many different gemstones. Characteristics and how to buy gems intelligently are valuable parts of this book. It could be especially helpful if you travel; how to deal with Customs and how to avoid getting scammed when buying outside the USA are included. There are appendices with Mohs scale, refractive index, specific gravity, birthstone list (Did you know that birthstones were "invented" in 1912?) and a good bibliography.