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Spiral structure in a Colombian emerald
Elongated biotite crystal inclusion with interface light interference, Aquamarine, Madagascar
Micrographs

Elongated biotite crystal inclusion with interface light interference, Aquamarine, Madagascar

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rutile needles partially altered in a Ruby from Mogok (TE2)
Micrographs

Rutile needles partially altered in a Ruby from Mogok (TE2)

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Genève
Insight

GGTL Laboratories Switzerland visiting presence at GemGenève

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Fibro-radiated crystallisation of Willemite Zn2SiO4 coloured by cobalt on the surface of a glaze
Micrographs, Research

Fibro-radiated crystallisation of Willemite

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The city of Nantes
Insight

40th Anniversary of the first DUG Diploma

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inclusion of an orange pyrope almandine garnet crystal in a diamond
Micrographs

Inclusion of an orange pyrope almandine garnet crystal in a diamond

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GGTL Laboratories Switzerland at Watches & Wonders
Insight

GGTL Laboratories Switzerland visit at Watches & Wonders

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Couverture du magazine Gemmologie et Francophonie
Insight

Discover the issue 3 of GEMMES: Celebrating spring and francophonie!

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Automorphous phenacite crystals in a synthetic emerald
Micrographs

Automorphous phenacite crystals in a synthetic emerald

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Automorphous margarite crystals in an unheated ruby from Mozambique
Micrographs

Automorphous margarite crystals in an unheated ruby from Mozambique

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"Platelets" in an aquamarine
Micrographs

"Platelets" in an aquamarine

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Unheated green sapphire from Anakie, Queensland, Australia
Micrographs

Unheated green sapphire from Anakie, Queensland, Australia

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