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HomeIGC 2025On the nature of blue rose quartz
17. Nov
IGC 2025

On the nature of blue rose quartz

Karen E. Fox, Andrew M. McDonald, Chris Yakymchuk
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Other Gemstones
17. Nov
IGC 2025
Padparadscha Sapphire & heat treatment

In 2018 the Padparadscha engagement ring of Princess Eugenie (Figure 1), the niece of the king, gave

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

This presentation explores the modern advancements in freshwater pearl cultivation in China, focusin

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Laurent Cartier
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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