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Spiral structure in a Colombian emerald
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Micrographs
20.03.2019
Garnet inclusion in type Ia diamond (darkfield illumination)
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Micrographs
04.03.2019
Flame pattern in a non-nacreous natural pearl from an unknown mollusc
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Micrographs
25.02.2019
Blue residues and gas in bubbles in green synthetic quench-cracked flame fusion sapphire
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Micrographs
18.02.2019
Ruby from Cambodia (TE2): Light interference in a thin fracture containing artificial glassy material
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Insight
01.10.2018
GemAlliance welcomes its 5th member: the LFG
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Micrographs, Research
28.08.2018
“Boehmite Needles” in Corundum Are Rose Channels
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Insight
01.06.2018
GemAlliance welcomes its 4th member: the JGGL
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Insight
17.11.2017
AIGS & GGTL announce the launch of GemAlliance
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Research
16.12.2016
Origin and growth of alpine fissure minerals in the western Swiss Alps: record of fluid flow during exhumation
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Research
30.10.2015
A Lalique quartz pendant in polarized light
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Research
04.05.2015
Beads cut from gastropod mollusc shell disguised in a coral necklace
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Micrographs, Research
01.09.2011
HIH: Multi-treated HPHT-grown synthetic diamonds showing some characteristics of natural diamonds
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About us
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Main services
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Exclusive services
Recovery of melee diamonds
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Cullinan report
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