The Gemmological Association of Hong Kong

No upcoming events.

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- 45th GAHK Anniversary Dinner and Presentations of FGAHK & Certified Gemmologist (C.G.) Certificates (2024/12/13)
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- JMA Hong Kong International Show 2024(Booth No:1EF11) (2024/11/28)
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	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 : info@gahk.org

GAHK Journal 2023

	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
	Obituaries
	Introduction of a Book
	How is the Fei Cui Industry in Hong Kong Recovering?
	Precious Coral Terminology
	The GIT Standard: Developing a Standard for Certification in the Gem and Jewellery Industry
	Analysis of the Causes of Colours in Blue and Green Chalcedony
	Extraordinary 40 Jewellery World Awards (JWA)
	The Hardness of Fei Cui A Gemmological Perspective
	Q&A with the Director of Jewellery Fairs at Informa Markets Jewellery (June 2023)
	The Characteristics of Hetian Jade (Nephrite Jade) Pebbles
	The Effects of Excess Iron on the Properties of Chrysoberyl
	Alert: New Artificially Colour Treated Fei Cui Jewellery - Applying Colour through Electroplating
	The Gemmological Characteristics of Opal from Lightning Ridge, Australia
	的黏土質玉的鑑定 Identification of Dickite-type Tianhuang with a Dyed Black Crow Outer Layer or Skin