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HomeIGC 2025Color Genesis Analysis and Characteristics for Origin Identification of Purple Jadeite
17. Nov
IGC 2025

Color Genesis Analysis and Characteristics for Origin Identification of Purple Jadeite

Elizabeth Su

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Jade
17. Nov
IGC 2025
Nitrogen aggregates in yellow HPHT and CVD synthetic diamonds

Yuri Shelementyev, Galina Kriulina, Olga Yarapova, Viktor Vins, and Alexander Stolyarevich

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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
Colored gemstones of metamorphic origin: Progress report in understanding how they crystallize at depth in East Africa, the Hindu Kush, Pamir Mountains, and the Middle-Urals Ring Structure

It is difficult to reconcile the existence of deposits of trans- parent gems of metamorphic origin w

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Laurent Cartier

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Age dating Diamond Emerald Gemmology Geochemistry IGC Jade Organics Origins Other Gemstones Pearl Ruby Sapphire Spinel Synthetics Tourmaline Treatments

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