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GSI
Lab Finds Man-Made Sapphires Posing as Diamonds
Gemological Science International (GSI) has identified undisclosed lab-grown white sapphire melee set in pendants that had
News May 28, 2019 Rapaport News
GSI HK
GSI Opens Hong Kong Lab
Gemological Science International (GSI) has opened a laboratory in Hong Kong, providing services including diamond grading and
News Oct 03, 2018 Rapaport News
GSI NY
GSI Opens New York Screening Facility
Gemological Science International (GSI) has launched a new screening and testing office in New York’s Diamond District.
News Sep 16, 2018 Rapaport News
RJC
Signet, Alrosa Execs Join RJC Leadership
The Responsible Jewellery Council (RJC) has named three senior figures from the trade to positions on its
News May 22, 2018 Rapaport News
Mark Gershburg
Mark Gershburg Resigns from U.S. KP Authority
Mark Gershburg stepped down as director of the U.S. Kimberley Process Authority (USKPA) to focus on his company, Gemological
News Dec 13, 2016 Rapaport News
gsi image logo
Press Release: GSI Works With WDMF, DGJG to Support Dubai Festival
Press Release: During the past month, Gemological Science International (GSI), one of the largest independently owned
Press Release Feb 02, 2015 Gemological Science International
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