‘Flash Effect’: a colored flashing occurring in materials that have undergone a Filling Treatment (e.g., Yehuda Method for Diamonds, Lead Filling for Rubies, Opticon Treatment for Emeralds). The test is to be considered diagnostic of the Treatment, for all purposes. Using fiber optic illumination with direction of observation nearly parallel to the plane in which the filled fracture (cavity) develops, facilitates the visibility of the Flash Effect.
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
