Fluorine: chemical element with the symbol F, atomic number 9, and atomic weight 19.00. It belongs to the Halogen Group and is the most electronegative element on the Periodic Table; it is the only element capable of oxidizing Oxygen.
Fluorine: chemical element with the symbol F, atomic number 9, and atomic weight 19.00. It belongs to the Halogen Group and is the most electronegative element on the Periodic Table; it is the only element capable of oxidizing Oxygen.
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.
Testata registrata al Tribunale di Napoli, reg. n. 15 del 18/05/2017.
Edita da: Gem Tech SRL – 80122 Napoli (Italy) - P. IVA IT09159321216
Contattaci / Contact us: info@rivistaitalianadigemmologia.com
© Copyright 2023 - IGR – Rivista Italiana di Gemmologia – Italian Gemological Review. Tutti i diritti riservati / All rights reserved
