Dictionary of Gems and Gemology 3rd Ed

The worldwide acceptance of the first edition of this book encouraged me to extensively revise and extend the second edition. The book was of value to readers of widely ranging interest, as seen from the letters received from scientists, students, mining engineers, periodical papers, teachers and students. This revision comes 5 years after the publication of the first edition. Many entries have been improved and now include new data. The book includes more than 25,000 entries, 2,000 graphic figures, and ca. 40 tables. The first edition was criticized by some who thought that some entries were not related to respective materials, but I can only repeat that many minerals were described in the form of inclusions or as paragenesis, necessary for determining the other gem stone materials. In this edition, the chapters on light, color, and colorant are of great interest, as several new terms have been used in these chapters. This edition contains ca. 26,000 entries and more than 3,000 figures. If you have criticism or suggestions, please feel free to contact the author.