Antoinette Matlins' buying guides for jewelry and gemstones are excellent, and "Diamonds" is no exception. Perhaps because she is a gemologist consultant, Ms. Matlins excels in anticipating what consumers want to know and makes sure her guides answer those questions. The paucity of color photographs, which are limited to a 12-page insert, may be "Diamonds" weakness. People like to look at pictures of sparkling gems, but the abundant information in the guide is easy to understand without photographs. And photos are probably less essential in a diamond guide than in a guide of colored gemstones, since there are fewer varieties. Many of the most interesting and popular cuts are pictured, so the essential photos are included.
After explaining how to examine a stone through a loupe, Matlins moves on to the meat of the guide in Part 2: There is a chapter for each of the 4Cs: cut, color, clarity, carat weight. Illustrations of ideal cut, different cuts, faulty cuts, and how they affect price are especially interesting. The chapter on color includes discussion of color grading systems and the HPHT process to improve color. These are followed by chapters on diamond grading reports and how that information affects price, and common types of misrepresentation and what you can do to avoid being misled, including discussion of fake diamonds and how to detect them. One chapter is dedicated to comparing prices for round, brilliant-cut diamonds, so that we can see the relative effects of the 4Cs on price. Another chapter addresses color and color enhancement in fancy diamonds, with a retail price guide and sample gem grading reports.
The last 2 parts of "Diamonds" include descriptions of common diamond settings, advice on what to ask when shopping for a diamond, what to consider, and what to get in writing on your bill of sale, as well as advice on finding a good jeweler, gemologist, appraiser, or insurer, caring for diamonds, and a little about the Gemprint diamond identification system. This book provides more detail about diamond cuts, enhancements, and how to detect a fake than Fred Cuellar's "How to Buy a Diamond" guide. Antoinette Matlins' approach is more hands-on, emphasizing the consumer looking at diamonds through a loupe, whereas Cuellar expects that you will rely on machines to analyze the diamonds but offers more guidance on the shopping experience itself -guidance that is inextricably entwined with promotion for his own business, however.