Another Diamond With Fake GIA Inscription Surfaces
Graders at HRD Antwerp found this one, a HPHT-treated natural diamond inscribed with the report number of an untreated stone.

HRD Antwerp reported this week that it recently analyzed a 1.50-carat diamond submitted to its lab.
The diamond was identified as Type IIa—meaning they contain no measurable nitrogen or boron impurities, a rarity for natural diamonds—which raised an immediate red flag for the lab.
HRD Antwerp said Type IIa diamonds are always “investigated extensively” to ensure they are natural diamonds without any color enhancements.
During testing, lab graders discovered the diamond had indeed undergone high-pressure, high-temperature (HPHT) treatment even though the GIA grading report that corresponded with the inscription number made no mention of color treatment.
Upon detailed microscopic investigation, graders noticed that even though the stone’s carat weight, cut and final clarity grade (VS1) matched the report, the clarity characteristics, while “quite similar,” did not match up exactly.
“Since these characteristics are a unique fingerprint of the diamond, the inscription was conclusively identified as false,” HRD Antwerp said.
The report out of Antwerp is one in a string of recent incidents of labs finding diamonds with counterfeit GIA inscriptions, some lab-grown diamonds or diamond simulants inscribed with report numbers for natural stones and others lower-quality goods inscribed with report numbers for better diamonds.
In a statement to National Jeweler, GIA said it has seen an uptick in the number of fraudulent inscriptions on stones submitted to its labs.
In an earlier release, GIA shared the same advice HRD Antwerp CEO Ellen Joncheere did in her lab’s recent statement on the 1.50-carat diamond: It is important to have diamond grading reports updated before completing a purchase, especially in instances in which the buyer does not know the seller very well.
When asked if these diamonds with fake inscriptions are emanating from a single source or geographic locale, GIA said it has not seen any evidence that the recently reported cases are related.
(Its Treated Diamond Grading Reports are gray in color to distinguish them from the blue reports issued for natural diamonds.)
HRD Antwerp returned the diamond to the submitting company.
The Latest

Expected to earn up to $4.5 million, the “Jarretière” bracelet is the star of Christie’s “The Magnificent Jewels of Anne Eisenhower” sale.

With jewelry sales coming down from their pandemic highs, retailers need to do all they can to retain existing customers, Peter Smith says.

Jewelry historians, authors, and experts will explore the works of Tiffany & Co., Oscar Heyman, Verdura, and more.

Distinguishing natural diamonds from laboratory-grown stones – now more available than ever – has been difficult for jewelers. Until now.

Johnson joined the retailer in 1987, establishing its first human resources department.


Supplier Spotlight Presented by IGI

The industry gathered to celebrate those who elevate the jewelry and watch industries.

De Beers Institute of Diamonds provides the very best in diamond verification, education and diamond services.

At JSA’s annual luncheon, President John J. Kennedy said the organization recorded more than 2,000 cases last year.

It highlights Gabrielle “Coco” Chanel’s lasting influence on modern design.

Jewelers of America’s Amanda Gizzi explores the qualities and accomplishments that make this year’s Gem Award nominees shine.

Here’s what the nine chosen organizations plan to do with the funds.

The designer is nominated for a Gem Award for Jewelry Design.

The jewelry giant’s full-year sales were essentially flat, brought down by fourth-quarter declines.

In its recent results, the company highlighted non-bridal jewelry sales and said its “inventory-light” showroom model may change.

See 15 fabulous pieces from the 2023 Gem Award for Jewelry Design nominees: Anita Ko, Kirsty Stone, and Ron Anderson and David Rees.

The new Cal. E365 movement doubles the running time of the current Eco-Drive models.

The mood among diamantaires is fairly optimistic despite the challenges brought about by sanctions and a cloudy economic outlook.

The mood is bullish as more companies get into the business despite the dramatic drop in lab-grown diamond prices.

Shah talks with National Jeweler about diamond demand, lab-grown, and why it’s difficult to make predictions about the U.S. market.

Hari Krishna Exports and the Dholakia Foundation’s “Mission 100 Sarovar” aims to create 100 lakes to help revive an area of Gujarat.

The educational resource will highlight the positive impact diamonds can make on their journey from mine to market.

Australian mining company Burgundy Diamond Mines announced plans to buy the mine in a deal valued at $136 million.

A 17th-century gold seal ring and an 18th-century memento mori ring met or exceeded estimates at a recent Noonans auction.

They will be recognized at the organization’s annual luncheon this weekend in New York City.

Sherry Smith breaks down the results so far this year, including which categories are the sales standouts and which are struggling.

The 1,000-year-old find is now on display in the Dutch National Museum of Antiquities.