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HomeIGC 2025Automated Data Processing of Raman Spectra for Supporting Spinel Origin Determination
01. 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
01. Nov
IGC 2025
Application of Fibre Optics Reflectance Spectroscopy (FORS) for the determination of mineral pigments in jasper

The identification of pigments is carried out routinely mostly by X-ray diffraction, FTIR and Raman

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Laurent Cartier
01. 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
24. Oct
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

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