17. Nov IGC 2025 Padparadscha Sapphire & heat treatment Stephen Kennedy Download Pdf SapphireTreatments
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 Read More Elodie
17. Nov IGC 2025 Dyed purple Jade (Lavender jade or purple “Fei Cui”) from Mandalay’s jade market, Myanmar Jade or "Fei Cui" are trade names for a stone that typi- cally contains only one or more main minera Read More Elodie
17. Nov IGC 2025 Studying renowned fancy color diamonds in museum collections: the case of the Winston Red Museums are unique repositories of international treasures. They are also places of active research, Read More Elodie
