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Jade • A Gemologist's Guide
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Introducing…

Jade • A Gemologist's Guide

edited by

Richard W. Hughes

featuring contributions from…

Ahmadjan Abduriyim • Dale Blankenship • George E. Harlow • Eric J. Hoffman • E. Billie Hughes • Richard W. Hughes • Jiang “Chris” Chenglong • John I. Koivula • Nikolai Kouznetsov • Liu Yicen • Kirk Makepeace • Jeff Mason • Dominic W.K. Mok • Qi Lijian • Mary Lou Ridinger • Donn Salt • Roland Schluessel • Andrew Shaw • Shi Guanghai • Susan Stronge • Wang Mingying • Stewart Young • Zhou "Adam" Zhengyu
with…
Rudolph I. Estrada • Tao Hsu • Jason C.H. Kao • Michael S. Krzemnicki • William F. Larson • Wim Vertriest

Sponsored by the Houston Museum of Natural Science

The study of jade is unlike that of any other gem, trespassing across conventional boundaries, particularly those of the gemological and mineralogical realm. Despite the march of mineralogical orthodoxy and conformity, the word “jade” is a fist in the air of protest, crying out not for further reduction and definition, but an expansion of the mineralogical canon to include the cultural aspects of human civilization and life. Because jade is so much more than a simple census of atoms, valence states, and places of residence. Jade is a lexicon liberator.

While the literature on jade is vast, perhaps greater than any other gem, there is a distinct lack of a volume in English that treats jade as a gemological material. This book is designed to fill that gap, with extensive information on the history, sources, appraisal and identification of both treated and imitation jades. All of this is together in a single volume for the first time, making it a must-have for collectors, dealers, gemologists, appraisers, curators and anyone else with an interest in this fascinating gem.

An understanding of jade is not limited to the technical or exacting; it also incorporates a feeling for the cultural, textural, and ephemeral qualities that make the study of this gem unlike any other. This volume will not just fill the “traditional gemological” gap, but will open readers’ eyes to a world beyond. Because jade is so much more…

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Publishing: 2022

Standard Edition Hardcover with Dust Jacket
US$200
534 pages; 240 x 280 mm (9.45 x 11 inches), 2.75 kg (6 lb)
Full Color Throughout

Special Limited Edition of 100 Signed and Numbered Copies Bound in Thai Silk with Slipcase
US$300 (Sold Out)

Developing a comprehensive colored stone grading system has been the dream of gemologists since the late 1970's, but despite a number of valient attempts, we are no closer to the goal today than we were four decades ago. This article examines the various problems of colored stone grading, explaining why the challenges are at least an order of magnitude greater than the grading of diamonds.

Solid inclusions have been used by gemologists as a means of determining origin. While there is a great deal of overlap from one source to another, there are also important differences. For example, while apatite has been identified in sapphire from Madagascar, Myanmar and Sri Lanka, apatite has never been identified in sapphire from Kashmir. Thus the purpose of this article is to give a full listing of solid inclusions in gem corundums from around the world, with each occurrence fully referenced. This is provided with the goal of making origin determination of ruby and sapphire more accurate.

To the jeweler, spinel is famous for its vivid colors. But for the gemologist, this gem is unlike any other. Its extreme hardness allows a fine polish. Couple this with single refraction, which eliminates the image blurring found in most other gems, and a varied landscape of inclusion subjects, and the result is an unparalleled canvas of delight for the photomicrographic artist.