About the Book This comprehensive guide, from gemstone expert and best-selling author Antoinette Matlins, is all you need to help you buy, collect, sell, care for--or simply enjoy--colored gemstones with confidence and knowledge. Easy to understand and practical, this updated and expanded edition explains what to look for and what to look out for! Book Synopsis This comprehensive guide, from gemstone expert and best-selling author Antoinette Matlins, is all you need to help you buy, collect, sell, care for-or simply enjoy-colored gemstones with confidence and knowledge. Easy to understand and practical, this updated and expanded edition explains what to look for and what to look out for!