Organizer : GAHK
Topic :   Integrated Lab Management System (ILMS) Combining ISO/IEC 17025, ISO/IEC 17034 and ISO/IEC 17043
Date :   2026/06/13 - 2026/06/13
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- Happy Lunar New year (2026/02/12)
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- Merry Christmas (2025/12/19)
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Special Announcement
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The Gemmological Association
of Hong Kong Ltd

P.O. Box 97711, Tsim Sha Tsui,
Kowloon, Hong Kong

Tel. (852) 2366-6006 / Fax. : (852) 2153-9673

E-mail : info@gahk.org
 

 

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GAHK Journal 2021

Table of Contents
A Word from the Editors
GAHK Board of Directors
Letter from the Chairman
A calendar of events organised by GAHK
Obituaries
Tortoiseshell
Book Reviews
A Discussion on Gambling on Fei Cui Rough
New Directions: An Announcement from GIT on their work using AI as a New Tool for the Origin Determination of Gemstones
The Value of a Gemstone’s Name
Made You Look • The Challenges of Identifying Inclusions at First Sight
A Comparison of the Structural and Chemical Characteristics of Lapis Lazuli and its Imitations
Gemmological Characteristics of a “New Style” Bleached, Filled and Dyed Fei Cui that differs from Traditional Simulants
Market Alert: Dyed & Heat Treated Fei Cui in Solid Colours of Yellow & Red
Radioactivity Detection & Analysis of a group of gemstones
Gemmological & Mineral Characteristics of Madagascar’s “Ocean Jasper”
A Brief History of Pearl Testing through the pages of Gems & Gemology

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