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HomeIGC 2025Bertrandite in Emeralds
17. Nov
IGC 2025

Bertrandite in Emeralds

Shane F. McClure
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EmeraldTreatments
17. Nov
IGC 2025
Gem zircon and sapphire age dating and application of origin determination: A study from New England sapphire fields, New South Wales, Australia

Ahmadjan Abduryim, Frederick Lin Sutherland, Terry Coldham, Elena Belousova Download Pdf

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Laurent Cartier
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
17. Nov
IGC 2025
Pink-orange gem quality euclase from Bahia, Brazil

Euclase, monoclinic crystal system—is a seldomly occurring mineral and with a Mohs hardness of 7 a

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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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