IndependentsOct 15, 2026
Retailer Hall of Fame 2026: Amy and Elise Greenberg For 40 years, sisters Amy and Elise Greenberg have helmed their 126-year-old family business, leading with appreciation and integrity.
Lab-GrownFeb 24, 2021
More Stones with Fraudulent Inscriptions Submitted to GIA
This time, they were either lab-grown diamonds or treated natural diamonds with counterfeit GIA report number inscriptions.
In cases involving fraudulent inscriptions, GIA overwrites the counterfeit inscription (as seen at left) and inscribes the number of the new report issued and the phrase “Laboratory-Grown,” if applicable (pictured at right, obscured for confidentiality). (© GIA)
New York—The GIA said it recently received more stones with counterfeit GIA report number inscriptions on their girdles.
Submitted for updated reports or verification services, the lab said stones were either lab-grown diamonds or treated natural diamonds that had been submitted to various labs around the world.
According to GIA, the diamonds with the counterfeit inscriptions were close in size and quality to the diamonds to which the report numbers actually belong.
For example, the report that came with one of the diamonds sent to GIA for an update was for a 1.50362-carat, VVS2, E color, Type I natural diamond with an excellent cut grade.
The submitted stone, however, was a lab-grown diamond weighing 1.51212 carats, VVS2, D color, and Type IIa with a very good cut grade, indicating these were clearly two different diamonds.
In cases such as this, GIA said it overwrites the counterfeit inscription with Xs, issues a new, accurate report, and then inscribes said stone with the new report number and, if applicable, the words “Laboratory-Grown,” per its protocol for grading lab-grown diamonds.
The lab also noted that in these cases, depending on the circumstance, it considers all options outlined in its Client Agreement, including notifying the submitting client, law enforcement and/or the public.
In a press release about the diamonds with counterfeit inscriptions, GIA reiterated the importance of having an updated diamond grading report before purchase, especially when the buyer hasn’t yet built a trusted relationship with the seller.
This is not the first time GIA has seen counterfeit inscriptions.
In fact, just last month the lab reported three stones had been submitted to its Johannesburg, South Africa location that ended up being moissanites inscribed with GIA report numbers belonging to natural diamonds.
The lab said Tuesday there is nothing to indicate the two incidents are related.
Editors' Picks
Sponsored by
More on Lab-Grown
The Latest
ColumnistsOct 15, 2026
Peter Smith: What Is the Culture REP?It’s a term Smith coined and felt compelled to share following a bad experience with an aborted flight and an unfeeling flight attendant.
WatchesOct 15, 2026
Stephanie Gottlieb’s New Movado Watches Are Made for Your Wrist StackMovado teamed up with the New York-based fine jewelry designer on a new collection of Movado Museum Velura watches.
Brought to you by
Meet Gemology’s Next Generation Microscope: GIA® Gemolite® NXT Professional EditionExperience gemstones with greater precision and comfort than ever before.
SourcingOct 15, 2026
Signet Jewelers, Richemont May Join Bidder for De Beers, Report SaysThe two companies are reportedly in talks to join the Global Diamond Consortium, led by former De Beers CEO Gareth Penny, as per Bloomberg.
Weekly QuizOct 08, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
CollectionsOct 15, 2026
Wolf x Marla Aaron's New Jewelry Box Is for Some (Not All) of Your ThingsThe “Some of the Things” box follows the two larger “Everything” box designs with the look and function of antique sewing and toolboxes.
IndependentsOct 14, 2026
Retailer Hall of Fame 2026: Coleman and Mitchell ClarkFourth-generation jewelers Coleman and Mitchell Clark exemplify the best qualities of their predecessors: humility, modesty, and confidence.
Brought to you by
Your Piece Could Be the One Editors Talk AboutSubmit your pieces for a chance to win in this year's competition.
SourcingOct 14, 2026
Manuel Marcial de Gomar, ‘The Emerald Whisperer,’ Dies at 90The gem hunter, whose 70-year career was defined by adventure and exploration, is remembered for his steadfast faith and sense of wonder.
FinancialsOct 14, 2026
LVMH’s Jewelry Brands Turn in ‘Very Good’ Performance in Q3 Tiffany & Co. continued its full-scale store renovation project while Bulgari’s high jewelry collection generated “record-breaking revenue.”
Events & AwardsOct 14, 2026
Chicago Responsible Jewelry Conference Releases 2026 ProgramThis year’s sessions feature leading voices from human rights, legal, and conservation organizations.
MajorsOct 13, 2026
David Webb Owner Purchases Lugano JewelryThe high-end jewelry retailer was sold to private investment firm Middle West Partners and a group of longtime clients.
IndependentsOct 13, 2026
Retailer Hall of Fame 2026: Sean DunnDunn, this year’s Single-Store Independent inductee, is passionate about innovation and telling the story of natural diamonds.
AuctionsOct 13, 2026
Christie's Geneva To Auction 'Bulgari Pink' DiamondThe 24-carat fancy intense pink diamond ring could fetch up to $18 million at the November sale.
IndependentsOct 13, 2026
Greenwich St. Jewelers’ New Candle Smells Like HomeThe “Island Jewel” candle honors New York City and Puerto Rico and raises money for the island’s water relief efforts.
TechnologyOct 13, 2026
GemFind Is a New JA Member Benefit Partner The partnership will give JA members access to preferred pricing, exclusive benefits, technology solutions, education, and resources.
SurveysOct 09, 2026
These Will Be the 10 Busiest Days for In-Store Shopping This Holiday SeasonStores should expect to see the most customers on Nov. 27, and Christmas week is expected to be hectic too, as Dec. 25 falls on a Friday.
CollectionsOct 09, 2026
Elisa Solomon Collabs With Serendipity 3 on ‘Frozen Hot Chocolate’ CharmThe charm, our Piece of the Week, features brown diamond frozen hot chocolate topped with white diamond whipped cream and a ruby straw.
AuctionsOct 09, 2026
8-Carat Blue Diamond Goes Unsold at UK Jewelry Auction The top lot of Elmwood’s recent fine jewelry sale in London was a 1.84-carat, D color Tiffany & Co. solitaire diamond ring.
WatchesOct 09, 2026
Movado to Sell Majority Stake in Ebel for $66.5MThe watch company agreed to sell a 95 percent interest to a group comprised of F.P. Journe, Chanel, and Swiss watch exec Pierre Jacques.
Policies & IssuesOct 08, 2026
Third Wave of IEEPA Tariff Refunds Begins This round of tariff refunds is for importers that have sued over IEEPA tariffs in the Court of International Trade and won.
CollectionsOct 08, 2026
Brent Neale’s New Collection Goes ‘Back to Basics’It revisits the brand’s most requested silhouettes, from "Pillow"-set necklaces and bracelets to "Signature"-set rings and earrings.
SourcingOct 08, 2026
Ethical Gem Fair Heads Back to BrooklynThe trade-only event includes buying opportunities as well as educational sessions on artisanal mining, the new Paraíba source, and more.
Events & AwardsOct 08, 2026
Pattons Fine Jewelry Sweeps Local Design ContestAra Chanakian, a jeweler at Pattons, took home top honors in every category at Jewelers of Louisiana’s annual jewelry design competition.
AuctionsOct 08, 2026
Reba McEntire’s Jewelry, Watches Head to Julien’s AuctionsThe live charity benefit sale in Nashville will also feature gowns, boots, and other memorabilia from the country music legend.
Supplier BulletinOct 08, 2026
Overnight Mountings’ Bridal Builder Helps Jewelers Turn Custom Design into a Hands-On Selling ExperienceSponsored by Overnight Mountings
Policies & IssuesOct 07, 2026
The Plumb Club Amplifies Its Voice as Geopolitical Pressures MountThe supplier organization recently joined JA and JVC to have more input on political issues affecting the jewelry industry.
