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Spiral structure in a Colombian emerald

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Publication

23.01.2026

A REMARKABLE "OTTU" SAPPHIRE AT THE LABORATORY

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Publication

19.01.2026

Batavian tears: a gemmological look at glass under extreme tension

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Publication

19.12.2025

Discover a newly documented vesuvianite deposit

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Publication

12.09.2025

Throwback to a remarkable non-copper-bearing elbaite tourmaline

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Publication

25.08.2025

Properties and Colouration of Orange Hackmanite from Afghanistan

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Publication

22.08.2025

“petrified” freshwater crab

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Publication

12.06.2025

Coloured glass coating of quartz beads before the 13th century: An undocumented sapphire imitation

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Publication

24.01.2025

Lab Alert! Melee-sized HPHT Treated Yellow Diamonds appear in the Market

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Micrographs, Publication

03.05.2024

Fibro-radiated crystallisation of Willemite

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Publication

01.07.2023

Cinnabar Inclusions in Ethiopian Opal

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Publication

01.07.2023

An Ethiopian cup in rhinoceros horn (1/2)

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Publication

30.06.2023

An Ethiopian cup in rhinoceros horn (2/2)

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