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Spiral structure in a Colombian emerald
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Insight
26.04.2024
40th Anniversary of the first DUG diploma
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Insight
11.04.2024
GGTL Laboratories Switzerland visit at Watches & Wonders
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Insight
20.03.2024
Discover the issue 3 of GEMMES: Celebrating spring and francophonie!
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Insight
25.09.2023
GGTL Laboratories Switzerland is looking for: Melee diamond grader
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Insight
17.12.2020
Happy Birthday, GemAlliance!
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Insight, Micrographs
01.11.2020
A "Maltese Cross" pattern seen in a natural diamond viewed with GGTL DFI System
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Insight
02.10.2020
From now, all GGTL reports will be exclusively in English.
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Insight
25.04.2020
Conference on replay: Brown Diamonds, a new in-depth look at their properties and classification
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Insight
21.04.2020
Webinar: Brown diamonds - A new in-depth look at their properties and classification
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Insight
04.04.2020
1K followers on Instagram
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Insight
01.07.2019
Mogok : The Valley of Precious Stones
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Insight
01.10.2018
GemAlliance welcomes its 5th member: the LFG
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Navigation SM
About us
Services
Main services
Diamond services
Gem services
Pearl services
Exclusive services
Recovery of melee diamonds
Cleaning & oiling of emeralds
Coral species identification
Cullinan report
Consulting
Products
News
Career
Contact
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fr