News

Spiral structure in a Colombian emerald
GGTL Laboratories Switzerland at Watches & Wonders
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GGTL Laboratories Switzerland visit at Watches & Wonders

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Couverture du magazine Gemmologie et Francophonie
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Discover the issue 3 of GEMMES: Celebrating spring and francophonie!

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Happy Birthday, GemAlliance
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Happy Birthday, GemAlliance!

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A "Maltese Cross" pattern seen in a natural diamond viewed with GGTL DFI System
Insight, Micrographs

A "Maltese Cross" pattern seen in a natural diamond viewed with GGTL DFI System

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GGTL Certificates
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From now, all GGTL reports will be exclusively in English.

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CO2 diamond slice, SGDF-5864, under UV excitation (220 nm). Micrograph Dr. T. Hainschwang
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Conference on replay: Brown Diamonds, a new in-depth look at their properties and classification

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Brown Diamond
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Webinar: Brown diamonds - A new in-depth look at their properties and classification

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1K followers on Instagram
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1K followers on Instagram

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Welcome sign and Mogok seen from the view point.
Insight

Mogok : The Valley of Precious Stones

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GemAlliance welcomes its 5th member: the LFG
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GemAlliance welcomes its 5th member: the LFG

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GemAlliance welcomes its 4th member: the JGGL
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GemAlliance welcomes its 4th member: the JGGL

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AIGS & GGTL announce the launch of GemAlliance
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AIGS & GGTL announce the launch of GemAlliance

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