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HomeIGC 2025Typomorphic features of tourmalines of the Malkhan pegmatite field from the Irkutyanka vein
17. Nov
IGC 2025

Typomorphic features of tourmalines of the Malkhan pegmatite field from the Irkutyanka vein

A.Y. Shelementyeva, Y.B. Shelementyev, O.V. Yarapova

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Tourmaline
17. 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
17. Nov
IGC 2025
Modern Cultivation of Freshwater Pearls in China: Advances in Materials, Technique

This presentation explores the modern advancements in freshwater pearl cultivation in China, focusin

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

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