17. Nov IGC 2025 Geographic Origin Determination of Natural Yellow Sapphires: The Preliminary Study Montira Seneewong-Na-Ayutthaya, Bhuwado Wanthanachaisaeng, Thanong Leelawatanasuk, Wilawan Atichat, Sirinapa Saengdech, Pimlapat Kamkaew and Tasnara Sripoonjan Download Pdf OriginsSapphire
17. Nov IGC 2025 Diamonds from Than Lwin River near Mong Hsu, Myanmar Sixteen rough diamonds were acquired in 2023 by co-author TTS from a gem dealer linked to Mong Hsu, Read More Elodie
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
17. Nov IGC 2025 Advancing Fei Cui Origin Authentication: A comparison of green fei cui from Myanmar, Guatemala, Italy and Russia In recent years, an increasing number of sources of fei cui, such as Guatemala, Italy and Russia, ha Read More Elodie