The Gemmological Association of Hong Kong

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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 2019

	Table of Contents
	A Word from the Editors
	GAHK Board of Directors
	Letter from the Chairman
	A calendar of events organized by GAHK
	Obituary Mr E. Alan Jobbins
	Gems & Collection Stones of the Krasnoyarsk Territory (Russia)
	Traceability & Blockchain for Gemstones – an Overview
	Prospecting for Diamonds in South Africa
	Gemstones of the Garnet Group – about mixed crystals and solid solution
	Book Reviews
	Importance of Emerald Clarity Enhancement: Gübelin Gem Lab standards
	Flowers Blooming on Rocks; Cheongsong Flowerstone of Korea
	The Art & Science of Reading Rough Jadeite Jade 2 parts Science, 1 part Art, and a lot of luck
	A Study of Minerals Associated with Turquoise using Infrared Spectrometer & the Significance of their Identification (2)
	The 3rd HK Jewelry Industry Outstanding Achievement Award
	Old Fei Cui of the Ming & Qing Dynasties. What is it really ?
	Blue Diffusion-treated Natural & Synthetic Sapphires recently available in the Market
	Myanmar’s Fei Cui Raw Materials Market