Magnesite: a mineral with the chemical formula MgCO3. It ranges from transparent to translucent, with a vitreous luster and colors varying from white to colorless, gray, and brownish. It crystallizes in the Trigonal System and rarely forms distinct crystals, usually occurring as granular aggregates or in compact crystalline masses. It is found in both dolomitic rocks and metamorphic rocks.
IGR (Rivista Italiana di Gemmologia/Italian Gemological Review) è la rivista gemmologica internazionale italiana, nata nel 2016 da Gem-Tech con l’obiettivo di sviluppare in Italia un network informativo per Gemmologi e per professionisti quotidianamente impegnati nel settore delle pietre preziose.
IGR – Rivista Italiana di Gemmologia, the Italian Gemological Review, is the leading International Gemological Magazine in Italy masterminded by Gem-Tech Gemological Institute, a broad information framework for Gemologists as well as professionals involved daily in the gemstone business.
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