Reviews of the first edition included: 'Dr Nassau has performed a valuable service in compiling this definitive work on gemstone enhancement,' Journal of Gemmology
From the Publisher
The book covers such advances as glass and plastic filling of diamonds and other gemstones, the large expansion in the use of both heat and irradiation treatments and the efforts to keep up identification procedures with the advances in treatments. Gemstone Enhancement is written for gemologists to simplify their work; by knowing the details of the possible treatment techniques, the treatments that have been applied to the gemstone under study can be more readily recognized. Collectors, dealers, jewelers, appraisers, pawnbrokers and others interested in gemstones will also gain added insight from knowing the range of possible treatments. All the fundamental concepts are covered, so only a general knowledge of gems is required of the reader.