The role of fiber-optic lighting in gemological microscopy.

World auction records for ruby, sapphire and spinel.

A discussion of the definition of padparadscha sapphire, from early to modern times, along with the difficulty in standardizing such definitions.

A brief description of the color types for ruby and sapphire used at Lotus Gemology.

Chinese-language translation of Lotus Gemology's ruby and sapphire color types.

บทคัดย่อเรื่องการจำแนกสีทับทิมและแซฟไฟร์ ที่ใช้ในโลตัสเจมโมโลจี

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 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 • Jason C.H. Kao • Michael S. Krzemnicki • Tao Hsu • Wim Vertriest

The study of jade is unlike any other gem, trespassing across all 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 reduction and definition, but an expansion of the mineralogical lexicon to include the cultural aspects of human civilization and life. The word “jade” is the anti-mineral. Because jade is so much more than a simple census of atoms, their valence states, and their places of residence.

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 in the world of gemstones. It is our heartfelt hope that 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.

While the literature on jade is vast, perhaps greater than any other gem, there is a distinct lack of a volume 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 the various forms of imitation jade. All of this is together in a single volume for the first time, making this a must-have for all collectors, dealers, gemologists, appraisers, curators and anyone else with an interest in this fascinating gem.

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Published Early 2022

Hardcover with Dust Jacket
Price: To Be Announced
~ 528 pages; 240 x 280 mm (9.45 x 11 inches)
Full Color Throughout

Welcome to Hyperion Sherlock, Lotus Gemology's Advanced Gem Inclusion Search Engine. This allows you to search for inclusions by the gem species (corundum, spinel, beryl, chrysoberyl) or variety (ruby, sapphire, emerald, alexandrite). You can even search by country of origin or locality. The result will be a table listing all known solid inclusions in that gem material. Each inclusion is fully documented with references of when it was first discovered.

Where we have photographs of that inclusion, those will also show up in the search. See anything missing? Let us know with the reference and we will consider adding it to the database.

Hyperion Sherlock is part of Lotus Gemology's ongoing effort to provide tools to help gemologists learn more about gems. Enjoy!

Simple Search

The story of Richard Hughes' four-decade adventure with jade, from Burma's jadeite mines to China's classic mutton-fat nephrite deposit at Hetian, Xinjiang Province. The work of China's modern jade carving masters is also discussed.

Lotus Gemology's gemologists have lectured extensively about a wide variety of gemological topics including ruby, sapphire, jade, and more.