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

Fancy colour diamonds that derive their colour from nitro- gen-related defects (such as N3/N2 center

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Elodie
17. Nov
IGC 2025
Found, Lost, and Found Again: The Geological and Gemological Significance of the Salininha Emerald Deposit, Brazil

The Salininha emerald deposit located in the municipality of Pilão Arcado, Bahia State, represents

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Elodie
17. Nov
IGC 2025
Morphologies and Surface Features of Diamond Samples from Southern Thailand

In 1955, the first report on Thai diamond was made by Dr. Payome Aranyakanon, a renowned tin explora

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Laurent Cartier

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

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