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HomeIGC 2025Spinel from Sri Lanka – An update
17. Nov
IGC 2025

Spinel from Sri Lanka – An update

Gamini Zoysa, Dietmar Schwarz, Arunas Kleismantas

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

When it comes to the geographic origin of gems, curiously enough, historians sometimes put forward p

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Elodie
17. Nov
IGC 2025
Gemological Characteristics of New Transparent Brown Sapphire

A newly observed variety of faceted transparent brown sapphire has recently entered the gem market,

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Laurent Cartier
17. Nov
IGC 2025
Color Genesis Analysis and Characteristics for Origin Identification of Purple Jadeite

Purple jadeite, renowned for its distinctive purple hues and rich cultural connotations, is highly 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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