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

Modern Cultivation of Freshwater Pearls in China: Advances in Materials, Technique

Niels Ruddy Hansen

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Pearl
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
17. Nov
IGC 2025
A Photo Survey of Inclusions in Fossiliferous Amber

For many, fossiliferous tree resin, primarily amber, gained wide visibility to the public in 1993 wh

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Elodie
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

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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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