cobalt Archives - IGR - Italian Gemological Review

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

Tag: cobalt

Latest Articles

First Examinations on Paraíba and Other Copper-bearing Tourmalines from Abuloo, Ethiopia

Market Transparency? The Guidelines for Properly Selling Gemstones Already Exist. They Were Written by Italy’s Leading Gemologists. They Simply Need to Be Applied

From Hong Kong and Bangkok to the United States: Non-European Gem and Jewelry Trade Shows in September 2026

September 2026 International Trade Fairs in Europe: From the Luxury of Vicenzaoro to London’s Emerging Talent and Madrid’s Historic Celebrations

The Science of Color in Freshwater Pearls