A Decade in the Field

Anniversary Event was successfully hosted in Bangkok. Reflecting on our ten years of field gemology research

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NewsSeptember 7, 2026

"A Decade in the Field" | GUILD Gem Laboratories Reflects on 10 Years of Field Gemology Research in Bangkok

BANGKOK, September 7, 2026 — GUILD Gem Laboratories marked ten years of field gemology research with “A Decade in the Field,” an anniversary event held in Bangkok. Built around the theme “Mine to Mark...

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ResearchAugust 4, 2026

‘Sugar’ Nephrite from the Altun Mountains, Xinjiang, China

‘Sugar’ Nephrite from the Altun Mountains, Xinjiang, China Nephrite has a long history and profound cultural significance in China, along with a vast consumer market. In July 2025, author YG conducted...

ResearchAugust 4, 2026

Grandidierite Inclusions in a Sri Lankan Sapphire

Grandidierite Inclusions in a Sri Lankan Sapphire Inclusions serve not only as important features for determining a gemstone's origin but also as indicators of the geological environment in which the ...

ResearchAugust 4, 2026

A Rare Inclusion Assemblage in a Ruby from Mogok, Myanmar: Lazurite, Sulphur and Bystrite

A Rare Inclusion Assemblage in a Ruby from Mogok, Myanmar: Lazurite, Sulphur and Bystrite A 2.22 ct oval-cut ruby was recently submitted to Guild Gem Laboratories for identification (Figure 6). Fourie...

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