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

Historic Emeralds and their Geographic Origin: A Retrospective Study

Marie-Laure Cassius-Duranton, Vincent Pardieu, Stefanos Karampelas

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EmeraldGemmologyOrigins
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
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
Hessonite garnet from Angul district of Odisha, India

This study describes hessonite (Fe-bearing variety of grossular garnet), found in the Birlamunda vil

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Elodie

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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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