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HomeIGC 2025Identification of melee size synthetic coloured diamond for jewellery
17. Nov
IGC 2025

Identification of melee size synthetic coloured diamond for jewellery

Kentaro Emori, Hiroshi Kitawaki, Mio Hisanaga, Masahiro Yamamoto

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Diamond
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
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

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Elodie
17. Nov
IGC 2025
Gem-quality pink fluorite from Planggenstock, Switzerland: chemical and physical properties and a comparison with pink fluorites from other localities

In this study, first results of trace element analyses and various spectrometric investigations on p

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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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