corundum, quality.10, gems, jade, jadeite, fei cui, nephrite, ruby, sapphire, emerald, amethyst, beryl, aquamarine, topaz, tourmaline, garnet, pearl, tanzanite, spinel, chalcedony, diamond, alexandrite

Divided into two parts, this comprehensive gemstone grading manual describes the criteria used to quality grade faceted gems, cabochons, pearls, opals, star stones and Catseyes. It applies the grading criteria to 35 of important gemstones, including diamond, ruby, sapphire, emerald, tourmaline, garnet, pearl, agate, and opal. Based on the author’s extensive experience in buying gems for his jewelry store, this book contains a weath of practical knowledge on gems. While the book occasionally slips when it comes to technical matters, it remains one of the best guides to buying gems. The second edition is greatly expanded. In the style of the first, it contains a wealth of practical knowledge, but would have benefitted from a technical editor. Both editions are highly recommended—RWH