Product Description: Identification of Gemstones is a comprehensive reference guide to gem and ornamental materials, and outlines all the features a gem tester has to know before making an identification. The experienced author team describe not only each natural gem species, but also their synthetic counterparts and the materials used as imitations, demonstrating how to avoid costly mistakes...read more

Product Description: Today buyers cannot be sure whether or not a gemstone is man-made, if its color has been produced artificially, and if it will survive life in a piece of jewelry. This book enables gemstone and jewelry buyers to find out for themselves...read more

Product Description: Artificial gemstones have been well established in the jewel trade for some time, but following further refinements in their manufacture, gemologists worldwide are facing increasing problems with their identification. Today, for instance, gem-quality synthetic diamonds—once deemed impossible to produce—are becoming widely available...read more

Product Description: Since it was published in 1962, Gems has become universally recognized as the most comprehensive and authoritative treatise on gem materials in the English language. Now in its sixth edition, it has been revised for relevance to today’s practice...read more

Product Description: The fifth title in the National Lampoon classic library, The National Lampoon Encyclopedia of Humor returns with the madness that only Michael O’Donoghue, P.J. O’Rourke, Terry Southern, Anne Beatts, Doug Kenney and Brian McConnachie could have possibly created...read more

Product Description: Featuring Bill Murray, John Belushi, Gilda Radner, Christopher Guest, Harold Ramis + + +.

Identifies the most common rocks and minerals, grouped by the processes by which they originated, and provides information on where they are found and their uses

Provides chemical descriptions, composition, occurence, and location for a variety of rocks and minerals, and includes a color photograph of each specimen described

Shares the experiences and observations of the Clintons' cat

Product Description: This book should be of interest to professionals; undergraduate and postgraduate mineralogists, lapidarians and geologists.

Explains the nature, occurrence, and properties of minerals, provides comprehensive information on all mineral varieties important to collectors and lapidaries, and describes gem-fashioning processes

Lists the names and discusses the composition, general properties, geographic distribution, and treatment of the various types of minerals of interest to collectors and lapidaries