17. Nov IGC 2025 Challenges in the Detection of Ruby and Sapphire Treatment in the Thai Market Supparat Promwongnan, Wilawan Atichat, Cheewaporn Suphan, Wassana Chongraktrakul, and Visut Pisutha-Arnond Download Pdf RubySapphireTreatments
17. Nov IGC 2025 A Photo Survey of Inclusions in Fossiliferous Amber For many, fossiliferous tree resin, primarily amber, gained wide visibility to the public in 1993 wh Read More Elodie
17. Nov IGC 2025 Pink-orange gem quality euclase from Bahia, Brazil Euclase, monoclinic crystal system—is a seldomly occurring mineral and with a Mohs hardness of 7 a Read More Elodie
17. Nov IGC 2025 Shining light on “480 nm band” diamonds: Gemmological characteristics of an unusual group of diamonds with yellow and red luminescence Fancy colour diamonds that derive their colour from nitro- gen-related defects (such as N3/N2 center Read More Elodie
