17. Nov IGC 2025 Pink to Red and Violet Diamonds from the Argyle Mine, Australia: Properties, Color Origin and Latest Research Results Thomas Hainschwang Download Pdf DiamondOrigins
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 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 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