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GIA treated green-yellow diamond Apr 2021
‘Peculiar’ Coloring Helps GIA Spot Treatment
The Gemological Institute of America (GIA) has identified a fancy-color diamond containing rare lines of blue, positing that
News Apr 08, 2021 Rapaport News
GIA lab-grown diamond reports
GIA Now Giving Details of Lab-Grown Treatments
The Gemological Institute of America (GIA) has started providing specific information on post-growth treatments for synthetic diamonds,
News Mar 16, 2021 Joshua Freedman
GIA
GIA Suspends Sealing Service
The Gemological Institute of America (GIA) has halted its diamond-sealing service after fraudsters tampered with packets
News Jan 19, 2020 Rapaport News
Renee Newman author
Do the 4Cs Still Make the Cut?
The “5Cs and 2Ts” isn’t as catchy as the usual formula, but it might be a better pricing method, according
News May 06, 2019 Joshua Freedman
Diamond District
Press Release: DDC, DMIA Issue Joint Statement on Undisclosed Treatments
Press Release: The Diamond Dealers Club (DDC) of New York and the Diamond Manufacturers & Importers
Press Release May 27, 2015 DDC, DMIA
GIA
GIA Hosts Discussion on Ruby, Sapphire Treatments in Japan
The Gemological Institute of America (GIA) will host a presentation on ruby and sapphire treatments and pearls on August
News Aug 15, 2013 Jeff Miller
GIA
GIA Presents 'Synthetic Diamonds and Treatments' in Pretoria
The Gemological Institute of America (GIA) will present “Synthetic Diamonds and Treatments” to its Alumni Africa Chapter
News May 14, 2013 Jeff Miller
Pangemtech Seminar Addresses Yellow Sapphire Treatments
Press Release: The Panjikar Gem Research & Tech Institute in Pune organized a free seminar on how to easily identify treated yellow sapphires as part
Press Release May 21, 2012 Pangemtech
AGA
AGA Extends Registration for Future of Diamonds Panel to May 23
Press Release: Is the world of diamonds as you've known it about to change forever? It might change in ways that we have
Press Release May 21, 2012 AGA
AGL, GRS Collaborate on Descriptions for Lead-Glass Treated Rubies
Press Release: Ever since the lead-glass treatment of ruby/corundum hit the market nearly 10 years ago, there have been issues over how
Press Release Oct 03, 2011 AGL
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