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HomeIGC 2025Blue sapphire from Malacacheta of Minas Gerais, Brazil
17. Nov
IGC 2025

Blue sapphire from Malacacheta of Minas Gerais, Brazil

Masaki Furuya

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Sapphire
17. Nov
IGC 2025
Historic Emeralds and their Geographic Origin: A Retrospective Study

When it comes to the geographic origin of gems, curiously enough, historians sometimes put forward p

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Elodie
17. Nov
IGC 2025
An approach to understanding the factors in the emerald enhancement clarity grading system used at CDTECGemlab

Emerald is the green variety of beryl, with its distinctive color resulting from trace amounts of ch

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Elodie
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

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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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