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Spiral structure in a Colombian emerald
Mica inclusions in a Russian emerald
Micrographs

Mica inclusions in a Russian emerald

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Colour zonations in a "solid CO2-rich" diamond
Micrographs

Colour zonations in a "solid CO2-rich" diamond

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Cover of the 4th Issue of Gemmes
Insight

GGTL Laboratories: Official Sponsor of GEMMES Magazine – Announcement of the 4th Issue

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Flame pattern in a non-nacreous natural pearl from an unknown mollusc
Micrographs

Flame pattern in a non-nacreous natural pearl from an unknown mollusc

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Garnet inclusion in type Ia diamond
Micrographs

Garnet inclusion in type Ia diamond

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Bubbles in epoxy resin, emerald from Chivor in Colombia
Micrographs

Bubbles in epoxy resin, emerald from Chivor in Colombia

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Blue residues and gas in bubbles in a green synthetic quench-cracked flame fusion sapphire
Micrographs

Blue residues and gas in bubbles in a green synthetic quench-cracked flame fusion sapphire

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Light interference in a thin fracture containing artificial glassy material, ruby from Cambodia (TE2)
Micrographs

Light interference in a thin fracture containing artificial glassy material, ruby from Cambodia (TE2)

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Cavity filling (C2) in a ruby from Mong Hsu in Myanmar
Micrographs

Cavity filling (C2) in a ruby from Mong Hsu in Myanmar

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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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