Spring 2002, Volume 38, Issue 1

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The Ultimate Gemologist: A Tribute to Richard T. Liddicoat
Dona M. Dirlam, James E. Shigley, and Stuart D. Overlin

On this occasion—the celebration of Richard T. Liddicoat’s 50 years guiding Gems & Gemology—it is fitting to review his enormous impact on the field of gemology. This includes the development of GIA’s education program, the creation of the quality-grading system for polished diamonds that is now accepted worldwide, numerous contributions to the gemological literature, involvement in new gem-testing techniques and instruments, and the establishment of a formal research program. His greatest achievement, however, has been his personal influence on the professionalism and ethical standards of the international gem and jewelry industry. Depository Data

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