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“gemmological”
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ggi.co.in
Gujarat Gemmological Institute
Gujarat gemological institute has taken an initiative by introducing Gemmological education to all sections of people associated with Gem & Jewelry industry
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gemlab.net
Gemlab [www.gemlab.net]: Gemlab Gemmological Lab / Laboratory for Gemological Analysis and Reports
The GEMLAB Laboratory for Gemstone Analysis and Reports is a renowned gemological laboratory using state-of-the-art technology combined with highly experienced research gemologists to assure you the highest standards in gem and gem treatment analysis, cou
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gemresearch.ch
GemResearch Swisslab (GRS) Specializing in Origin Determination of Fine Rubies and Sapphires
GemResearch Swisslab (GRS) has invented its own high technology portable gemmological laboratory, computerised and with state-of-the-art spectrometers. GRS Heat Treatment thermal treatment gemmological heat enhancement process clarity color ruby sapphire
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ericemms.com
Eric C. Emms in Hatton Garden, London. Professional gemmologist and gem educator offering short diamond and gem courses, gem advice and information
We offer short, practical gem courses, seminars and gemmological services. Our courses are short (one to three days) and inexpensive