The bestselling guide to understanding, identifying and buying gemstonesA clear, uncomplicated approach to the subject, illustrated in colour throughout, making the identification of gems simple Whether buying gem-set jewelry or loose stones, you will be faced with a colorful array of beauty and value. With such a wide choice - from amethyst to zircon - which should you choose? What is it worth, and how do you even know it is real? All that glitters...