17. Nov IGC 2025 An approach to understanding the factors in the emerald enhancement clarity grading system used at CDTECGemlab Javier Garcia-Toloza, Juan David Rincón, Cristian Ochoa, Julio Cedeño Carlos Download Pdf Emerald
17. Nov IGC 2025 Zoisite and its many color The mineral zoisite is a calcium alumosilicate belonging to the class of silicates, more exactly sor Read More Elodie
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 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
