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HomeIGC 2025Shining light on “480 nm band” diamonds: Gemmological characteristics of an unusual group of diamonds with yellow and red luminescence
17. Nov
IGC 2025

Shining light on “480 nm band” diamonds: Gemmological characteristics of an unusual group of diamonds with yellow and red luminescence

Marleen Bouman and Jelena Zarupski

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DiamondGemmology
17. Nov
IGC 2025
Identification of melee size synthetic coloured diamond for jewellery

Synthesis methods to produce large and high-quality dia- mond for jewellery have been improved over

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Laurent Cartier
17. Nov
IGC 2025
Gems in Hellenistic and Roman Jewellery of Northern Greece: An investigation from the Collections of the Archaeological Museum of Thessaloniki, Greece

This study presents the results of an interdisciplinary archaeogemological investigation focusing on

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Laurent Cartier
17. Nov
IGC 2025
Geographic Origin Determination of Natural Yellow Sapphires: The Preliminary Study

Determining the geographic origin of yellow sapphires plays a critical role in the gem trade, as ori

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Laurent Cartier

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