Jewelry & Gems: The Buying Guide by Antoinette L. Matlins is one of the world's most trusted consumer guides to purchasing gemstones and jewelry. First published in 1984 (originally as The Complete Guide to Buying Gems), the book has been continuously revised to reflect changes in the gem and jewelry industry. Written in clear, non-technical language, it helps readers confidently buy diamonds, colored gemstones, pearls, gold, platinum, and fine jewelry while avoiding costly mistakes, fraud, and misleading sales practices. It is recommended by jewelers, gemologists, and consumer advocates worldwide.

The book explains the famous Four Cs (cut, color, clarity, and carat weight) of diamonds, gemstone treatments and enhancements, synthetic and imitation stones, jewelry settings, precious metals, appraisals, insurance, and grading reports. It also offers practical advice on selecting reputable jewelers, understanding certificates from gemological laboratories, negotiating prices, and buying jewelry both in stores and online. Filled with real-world buying tips, illustrations, and easy-to-follow explanations, it is an indispensable reference for first-time buyers, collectors, investors, and jewelry enthusiasts.