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GIA color grading
GIA Recalls Diamonds over Treatment Query
The Gemological Institute of America (GIA) has asked customers to return a number of colored diamonds for reassessment, suspecting
News Apr 18, 2021 Joshua Freedman
GSI
Gemological Science International Opens in Jaipur
Gemological Science International (GSI) has launched a laboratory in Jaipur, aiming to tap into the Indian city’s rich
News Apr 13, 2021 Rapaport News
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
Mumbai Gateway to India
Mumbai Diamond Services Get Approval to Continue
Diamond-grading laboratories and other industry services are allowed to operate during Mumbai’s Covid-19 lockdown, according to a clarification
News Apr 08, 2021 Rapaport News
GIA-graded diamonds
GIA Backlog Raising Concerns for Manufacturers
Customers of the Gemological Institute of America (GIA) are experiencing severe delays to grading submissions, creating worries about
News Mar 25, 2021 Joshua Freedman
GIA counterfeit inscription
Diamonds with Fake Inscriptions Turn Up at GIA
The Gemological Institute of America (GIA) has recently received “a number of” lab-grown or treated stones carrying natural-diamond
News Feb 23, 2021 Rapaport News
GIA moissanite with forged inscription
GIA Spots Rare Inscription Fraud in Simulant
The Gemological Institute of America (GIA) has uncovered three synthetic moissanites with forged inscriptions that fraudsters
News Jan 27, 2021 Joshua Freedman
Surat diamond cutters
‘Naturalmark’ Aims to Defeat Undisclosed Synthetics
A new project to combat undisclosed synthetics has launched in India, offering retailers low-cost screening and inscription using
News Jan 03, 2021 Joshua Freedman
GIA grading report
GIA to Cut Back Antwerp Business
The Gemological Institute of America (GIA) will scale back its Antwerp operations from January, but has
News Dec 22, 2020 Joshua Freedman
Gubelin gemstone ratings
Colored Gemstones Get New Ratings System
Switzerland’s Gübelin Gem Lab has launched a scoring system for colored gemstones based on wine ratings, claiming
News Nov 24, 2020 Rapaport News
T Mark
Chow Tai Fook Unveils In-House AI Grading Report
Chow Tai Fook is launching its own diamond certificates based on artificial intelligence, using a new grading scale
News Nov 03, 2020 Rapaport News
GIA lab-grown diamond reports
GIA Unveils New Lab-Grown Reports
The Gemological Institute of America (GIA) has launched its new grading reports for lab-grown diamonds, offering
News Oct 15, 2020 Rapaport News
Polished diamonds
‘Grading’ Is Just for Natural Diamonds, Says CIBJO
Laboratories should reserve the term “grading report” for natural diamonds rather than lab-grown stones, the
News Oct 13, 2020 Rapaport News
Polished diamond in loupe
Diamond Grading Gets an International Standard
The International Standards Organization (ISO) has approved its first grading guidelines for polished diamonds in an effort
News Sep 24, 2020 Rapaport News
Sarine Files India Lawsuit 150
Sarine, Chinese Lab Debut Light-Performance Report
Sarine Technologies has partnered with China’s National Gemstone Testing Center (NGTC) to offer light-performance reports for
News Sep 16, 2020 Rapaport News
GIA podcast Aug 2020
GIA on Covid-19, Automation and Synthetics
The Gemological Institute of America is pressing ahead with projects that may transform diamond grading, CEO Susan
News Sep 10, 2020 Joshua Freedman
GIA dossiers
GIA Considers Shutting Antwerp Lab
The Gemological Institute of America (GIA) plans to close or heavily scale back its Antwerp operations following a review
News Aug 30, 2020 Rapaport News
JD.com
Chinese Online Giant to Offer Verified GIA Reports
Technology provider Everledger has teamed up with the Gemological Institute of America (GIA) to verify diamond grading reports
News Aug 26, 2020 Rapaport News
Gems and Gemology natural all diamond ring
Natural All-Diamond Ring Is a GIA First
A ring made entirely of natural diamond has become the first of its type to reach the Gemological Institute
News Aug 20, 2020 Rapaport News
Tiffany diamond engagement ring
Tiffany to Share Full Provenance of Its Diamonds
Tiffany & Co. will give consumers full details of each diamond’s route from mine to jewelry, encompassing
News Aug 19, 2020 Rapaport News
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