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GSI 150
Lab Launches Synthetic-Diamond Course
Gemological Science International (GSI) has launched a new online educational course dedicated to lab-grown diamonds, it said Tuesday.The
News Oct 21, 2020 Rapaport News
Alethea Inns
GSI Taps New Chief Learning Officer
Gemological Science International (GSI) has appointed Alethea Inns as its chief learning officer, to oversee the grading
News Aug 23, 2020 Rapaport News
Lab-grown rough diamond
GSI to Flag Treatments in Lab-Grown Reports
Gemological Science International (GSI) has launched a new grading report for synthetic diamonds that states whether
News Mar 15, 2020 Rapaport News
GSI treated diamond
Lab Spots New Method for Masking Synthetics
Gemological Science International (GSI) is urging extra diligence after receiving a lab-grown diamond bearing a treatment generally only
News Feb 25, 2020 Rapaport News
GSI
Lab Warns of Color Instability in CVD
Synthetic diamonds grown using chemical vapor deposition (CVD) could change color for an extended period following
News Dec 04, 2019 Leah Meirovich
GSI
GSI Launches Center for Synthetics Screening
Gemological Science International (GSI) is opening its second testing center in New York dedicated to identifying undisclosed lab-grown
News Jul 28, 2019 Rapaport News
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
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
GSI Surat Breaks New Ground in Bulk Star and Melee Testing
Gemological Science International (GSI), one of the world’s leading gemological labs, announced it has become the first
News Aug 19, 2015 Rapaport News
gsi image logo
Press Release: GSI Hosts Educational Lunch in Surat
Press Release: Gemological Science International (GSI), one of the largest independently owned gemological laboratories in the world,
Press Release May 20, 2015 GSI
gsi image logo
Press Release: GSI & Parinay Jewellery Host Education Session in Trivandrum
Press Release: Gemological Science International (GSI), one of the largest independently owned gemological laboratories in the world,
Press Release Apr 20, 2015 GSI
gsi image logo
Press Release: GSI Botswana - The First to Utilize Sarine Axiom in Africa
Press Release: Gemological Science International (GSI), one of the largest independently owned gemological laboratories in the world,
Press Release Feb 23, 2015 GSI
Marc Gershburg
Laboratories Need to Focus on the Jewelry Retail Market
Gemological Science International (GSI) is an independent commercial gemological laboratory. Founded in 2005, GSI is one of the youngest labs
Profiles Jan 30, 2015 Avi Krawitz
gsi image logo
GSI Opens Botswana Lab
Gemological Science International (GSI) has opened a laboratory in Gaborone to capitalize on Botswana’s growth as a trading center. “After decades
News Dec 28, 2014 Avi Krawitz
gsi image logo
GSI Hosts Workshops at the Kerala Gem & Jewelry Show
Press Release: Gemological Science International (GSI), a full-service, high-tech lab designed specifically to meet the rapidly changing
Press Release Dec 01, 2014 GSI
gsi image logo
GSI to Participate at Dubai Intl. Jewellery Week 2014
Press Release: Gemological Science International (GSI), a full-service, high-tech lab designed specifically to meet the rapidly changing
Press Release Nov 18, 2014 GSI
gsi image logo
GSI Opens Laboratory in Surat
Press Release: Gemological Science International (GSI), a full-service, high-tech lab designed specifically to meet the rapidly changing
Press Release Nov 03, 2014 GSI
gsi
GSI Conducts Intensive Seminar, Workshop in Nashik
Press Release: Gemological Science International (GSI) a full-service, high-tech lab designed specifically to meet the rapidly changing
Press Release Sep 23, 2014 GSI
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