17. Nov IGC 2025 Noble gas in corundum: interests in gemology Boris Chauviré, Marianna Corre, Martial Curti, Cécile Gautheron, Sarah Figowy, Lauriane Pinsault Download Pdf Gemmology
17. Nov IGC 2025 Bertrandite in Emeralds Over the past few years we have been seeing more and more lower quality stones in the lab. The reaso Read More Laurent Cartier
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, Read More 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 Read More Laurent Cartier