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HomeIGC 2025Automated Data Processing of Raman Spectra for Supporting Spinel Origin Determination
17. Nov
IGC 2025

Automated Data Processing of Raman Spectra for Supporting Spinel Origin Determination

Tasnara Sripoonjan, Montira Seneewong Na Ayutthaya, Sirinapa Saengdech, Sutas Singbamroong, Alongkot Fanka
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GemmologyOriginsSpinel
17. Nov
IGC 2025
History of Garnet Mining and Cutting in the Austro-Hungarian Monarchy

Bohemian garnets, i.e., chromium-bearing pyropes, are found in several jewellery pieces from the Mig

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Laurent Cartier
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
Blue sapphire from Malacacheta of Minas Gerais, Brazil

Malacacheta, located in Minas Gerais, Brazil, is renowned for its alexandrite deposits and com-plex

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Laurent Cartier

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