GIA Recalls Diamonds over Treatment Query

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PinkDiamond
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GIA Recalls Diamonds over Treatment Query

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This one from Rapaport is the first I've seen on this recall of 'green or greenish' diamonds by GIA, and I found their disclaimer to be very interesting in that their conclusions are based on the “state of knowledge and criteria in place at the date of examination,”, which relieves them of any responsibility for making incorrect calls on any that were wrong, as Robert James of the ISG continually pointed out. The public is ignorant as to how diamonds are tested to see if they're treated or synthetic, so they can use just about any excuse for their failure to make the right call the first time and the public will be none the wiser :roll:

GIA Recalls Diamonds over Treatment Query
Apr 18, 2021 8:06 AM By Joshua Freedman

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"RAPAPORT... The Gemological Institute of America (GIA) has asked customers to return a number of colored-diamond grading reports after suspecting that a treatment might have gone under the radar.

The organization will reassess certain diamonds with “green or greenish” in the color grade, a spokesperson told Rapaport News last week. The recall applies to reports it issued between January and June 2020. The GIA declined to reveal how many stones were affected or to provide their report numbers.

“Recent research and investigation into potential treatment methods caused us to request the return of the subject diamonds for further analysis,” the spokesperson said.

The institute informed customers about the issue around six weeks ago, and is in the process of collecting and reevaluating the diamonds. Some stones could get an “undetermined” ruling, while others may require further testing, the spokesperson explained. Many diamonds had already come back with their natural-color statuses confirmed, market sources said. The GIA bases its conclusions on the “state of knowledge and criteria in place at the date of examination,” it added.

Sources estimated that the number of reports under review was at least in the high 10s, and possibly much more. The GIA did not specify the nature of the possible treatment. The case is unrelated to the recent discovery of a treated fancy-color diamond on which the institute reported in the latest edition of its academic journal, Gems & Gemology.

“GIA has been investigating the cause of color in diamonds and other gem materials for nearly 70 years,” the spokesperson continued. “Among GIA’s earliest area of research was determining origin of color of green diamonds, which remains even today one of the most difficult areas of gemology. The research process is dynamic, and we recently discovered ... "

https://www.diamonds.net/news/NewsItem. ... ment+Query
PinkDiamond
ISG Registered Gemologist


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