Tag Archives: diamond grading

Lab-grown diamond grading gets specific

August 14, 2020

Ensuring public trust in gems and jewellery is the goal of Gemological Institute of America’s (GIA’s) recent change to its lab-grown diamond reporting.

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First synthetic ‘all diamond’ ring graded in Antwerp

February 19, 2019

Dutch Diamond Technologies (DD) recently unveiled the world’s first ring made entirely from a chemical vapour deposition (CVD) lab-grown diamond.

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Brown diamond grading to be offered by AGS Laboratories

April 19, 2018

The nonprofit American Gem Society (AGS) Laboratories has announced an expansion to its diamond grading capabilities. It will now grade brown diamonds as well as their white counterparts.

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AGS Laboratories: Protecting consumer confidence one diamond at a time

September 28, 2016

The first time Jason Quick laid eyes on the Esperanza diamond, he was awestruck by the way light moved through the rough crystal. It was love at first sight, as he puts it, a once-in-a-lifetime encounter with the 8.52-carat diamond unearthed at Arkansas’ Crater of Diamonds State Park.

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GIA launches automated melee screening service

June 2, 2016

Gemological Institute of America (GIA) say it has developed a fully automated system to rapidly and accurately analyze and sort round D-to-Z melee-size diamonds.

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Rapaport to issue diamond grading reports

February 23, 2016

Rapaport Group is launching a new diamond grading report that will only be issued for the crÃ¨me de la crÃ¨me of diamonds.

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Hundreds of diamonds with invalidated GIA reports still in circulation

November 26, 2015

Only 175 of the 1042 diamonds with altered reports have been returned to Gemological Institute of America (GIA) following news its database had been hacked and grading reports altered.

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GIA releases client list in hacking case

October 27, 2015

Gemological Institute of America (GIA) has released the list of client accounts at the heart of a hacking scandal.

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CIBJO debates wading into grading ethics issue

May 7, 2015

Overstated diamond grading reports came to the fore at CIBJO Congress, with some calling for the group to take a more active role in the debate.

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Subjectively speaking: How a single word changes everything and nothing

May 1, 2015

It would seem consumers are now aware of the jewellery industry’s dirty little secret: diamond grading is subjective. Though many graded stones are generally accepted as accurate to the issued report, there are just as many reports containing grading errors or bias.

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