Скачать или смотреть Liddicotite - The Gemstone Named After The Father of Modern Gemology!

This gemstone was recognized as a separate species of tourmaline for its characteristic geometric patterns and color zoning in 1977 and named Liddicoatite after the father of gemology, Richard T. Liddicoat.

In 1953, Liddicoat introduced the GIA diamond grading system - a practical approach to grading the quality of colorless to light yellow polished diamonds on the basis of color, clarity, and cut. A central feature was the D-to-Z color grading system for faceted colorless to light yellow diamonds—the vast majority of diamonds seen in the trade.

Beginning in 1953, GIA instructors taught this grading system to hundreds of students so they could evaluate their own diamonds. Subsequently, many of these students asked GIA to set up a procedure whereby they could submit their grading worksheets, and eventually the diamonds themselves, for an independent assessment. And so, GIA issued the first GIA Diamond Grading Report in 1955.

With a background in geology and mineralogy, he co-authored the first edition of The Diamond Dictionary and also devised the “rapid sight” system for estimating diamond cutting quality.

In addition, Liddicoat presided over four decades of innovation in gem instrument development at GIA, and established gem instruments as one of the Institute’s highest priorities. In addition to his early work with Shipley to develop the Diamolite, Liddicoat’s scientific background enabled him to foster the development of instruments such as the prism spectroscope and the ProportionScope. His objective throughout instrument development at GIA was to provide jewelers with practical tools that could help them in the day-to-day operation of identifying gemstones.

Is anyone else as in awe as I am of all the contributions this man has made to the field of #gemology ?

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