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Spiral structure in a Colombian emerald
Gemmology books
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Gem books you absolutely need to read!

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Atelier de gemmologie à la Haute Ecole Arc - HES-SO : Retour sur un événement enrichissant
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Gemology workshop at Haute Ecole Arc - HES-SO: A look back at an enriching event

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Natural glass inclusions in the form of atolls in an unheated ruby
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Natural glass inclusions in the form of atolls in an unheated ruby

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Formation of synthetic spinel in a heated sapphire
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Formation of synthetic spinel in a heated sapphire

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Mica inclusions in a Russian emerald
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Mica inclusions in a Russian emerald

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

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Cover of the 4th Issue of Gemmes
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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
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Flame pattern in a non-nacreous natural pearl from an unknown mollusc

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Garnet inclusion in type Ia diamond
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Garnet inclusion in type Ia diamond

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Bubbles in epoxy resin, emerald from Chivor in Colombia
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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
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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)
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Light interference in a thin fracture containing artificial glassy material, ruby from Cambodia (TE2)

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