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- 44th GAHK Anniversary Dinner (2023/12/07)
- Invitation - JMA Hong Kong International Show 2023(Booth No:1CON2-1) (2023/10/26)
Special Announcement
Contact GAHK

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 :


Full Version

Compressed Version

GAHK Journal 2022

Front and Back Cover
Table of Contents
A Word from the Editors
GAHK Board of Directors
Letter from the Chairman
A calendar of events organised by GAHK
DNA Fingerprinting as a Tool in Modern Gemmology
The Composition & Lithological Characteristics of Tianhuang Stone from Shoushan China
Damage caused to Gemstones by Lasers during Jewellery Repair
Application of Raman Spectroscopy in Jewellery Testing
Gemmological Characteristics of Garnet from Shuangyashan China
Spectroscopic Characteristics of Amber in Kaliningrad Russia
Colour Origin of Brown Opal in Ethiopia
A Study on Improving the Surface Appearance of Low-quality Pinctada Maxima Bead Cultured Pearls
COVID – A Virus in the Industry A Gem Dealer’s View
Beauty Frozen in a Crystalline World
Preliminary Study on High-quality Green Fei Cui from Guatemala

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