IGI Finds 6-Carat ‘Natural’ Diamond Is Actually Lab-Grown
The submitted stone had been cut and polished with “meticulous precision” to match a natural diamond report, the lab said.

The International Gemological Institute said it analyzed and graded a 6.18-carat round brilliant diamond stone at its Bangkok lab that had been submitted for verification.
It came with a report from the Gemological Institute of America stating it was a natural diamond of D color, flawless clarity, and triple excellent cut, but IGI established it was, in fact, a lab-grown diamond.
The lab’s gemologists realized the natural stone had been swapped with a lab-grown diamond, which had been cut and polished to match the GIA report’s data with “meticulous precision previously never seen.”
Additionally, the stone had been inscribed with a counterfeit report number, an issue GIA has been battling as of late.
“At IGI, we have seen a huge increase in double verification demand, which means before going for a major purchase, consumers like to receive confirmation that the stone matches the original report,” IGI Thailand and Hong Kong Managing Director Bob Van Es said.
The Latest

Was 2025 a good year for jewelers? Did lab-grown diamonds outsell natural? Find out on the first episode of the “My Next Question” podcast.

Whether you recognize their jewels or are just discovering them now, these designers’ talent and vision make them ones to watch this year.

Buyers are expected to gravitate toward gemstones that have a little something special, just like last year.

Criminals are using cell jammers to disable alarms, but new technology like JamAlert™ can stop them.

Plus, JSA’s Scott Guginsky discusses the need for jewelers to take more precautions as the gold price continues to climb.


Morris’ most cherished role was being a mother and grandmother, her family said.

“Vimini” is the first chapter of the “Bulgari Eternal” collection that merges archival pieces with modern creations.

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.

The third edition will be held in Half Moon Bay, California, in April.

The grant is in its first year and was created to recognize an exceptional fine jewelry designer whose star is on the rise.

Data built on trust, not tracking, will be key to success going forward, as the era of “borrowed attention” ends, Emmanuel Raheb writes.

Heath Yarges brings two decades of experience to the role.

Pete’s boundless curiosity extended beyond diamond cut and he was always eager to share his knowledge with others, no matter the topic.

Cartier, Van Cleef & Arpels, Buccellati, and Vhernier had another successful holiday season, Richemont reported this week.

Our Piece of the Week is Lagos’ “Bee” brooch that was seen on the red carpet for the first time on Sunday.

Trevor Jonathan Wright led a crew in a string of armed robberies targeting South Asian-owned jewelry stores on the East Coast.

The program recognizes rising professionals in the jewelry industry.

A new lifestyle section and a watch showcase have been added to this year’s event.

Avocados From Mexico is celebrating those who love to double-dip in game day guacamole with a 14-karat yellow gold tortilla chip necklace.

Petra Diamonds unearthed the 41.82-carat, Type IIb blue diamond at the Cullinan Mine.

The brand is trading its colorful fabric cords for Italian leather in its “Lasso” baby locket bracelets.

National Jeweler and Jewelers of America’s popular webinar series is evolving in 2026.

The department store chain owes millions to creditors like David Yurman, Roberto Coin, Kering, and LVMH.

The award-winning actor’s visionary approach and creativity echo the spirit of Boucheron, the brand said.

Edge Retail Academy honored Burnell’s Fine Jewelry in Wichita, Kansas, with its annual award for business excellence.

In a market defined by more selective consumers, Sherry Smith shares why execution will be independent jewelers’ key to growth this year.

The family-owned jeweler’s new space is in a former wholesale produce market.

























