GIA Is Changing Its Lab-Grown Diamond Grading Reports Again
Starting in Q4, the lab will use the same color and clarity terms as it does for natural diamonds.

The lab made the announcement Wednesday, citing the “growing acceptance in the trade and by consumers of laboratory-grown diamonds as a distinct category” as the reason for altering a practice it has used since it first began grading man-made diamonds in 2007.
The change will apply to grading reports for both colorless/near-colorless and colored lab-grown diamonds.
Reports for both will still have a statement that the graded stone may have been treated post-growth to change its color, and all lab-grown diamonds the GIA grades will be inscribed with the report number and the words “laboratory-grown.”
The reports will be digital only and replace the lab’s current Laboratory-Grown Diamond Report.
GIA updated the report just last year, dropping the word “synthetic” but still opting not to use the same terms as it does for natural diamonds.
“Natural and laboratory-grown diamonds co-exist today, accepted by both consumers and the trade. We believe the growth of laboratory-grown diamonds will expand the overall diamond market and bring in new customers,” President and CEO Susan Jacques said in a press release announcing the change.
“Ensuring consumers’ trust with GIA’s reliable, independent and authoritative grading reports for all diamonds benefits the public and the entire gem and jewelry industry.”
It will include the GIA Laboratory-Grown Diamond Grading Report (4Cs assessment, a plotted clarity diagram and a proportions diagram) for stones that are 0.15 carats and up, and the lower-priced Laboratory-Grown Diamond Dossier (4Cs assessment and a proportions diagram only) for smaller diamonds, 0.15 to 1.99 carats.
The reports will cost the same as those GIA issues for natural diamonds but will have a unique design and format to differentiate them.
The Latest

From influential executives to innovative designers, we pay tribute to the people we said goodbye to this year.

The retailer is expanding into areas with large Indian and South Asian populations.

The Italian brand has opened its first flagship amid the peaks of the Dolomites in Madonna di Campiglio, Italy.

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

The new curation at the Natural History Museum of Los Angeles County showcases rare gem and mineral specimens in their uncut, natural state.


The couple pleaded guilty to concealing at least $127 million in cash transactions at its precious metals businesses.

Consumers shared concerns about prices, inflation, tariffs, trade, and politics in the survey’s write-in response section.

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

In February 2026, the auction house will move its headquarters to the former Steinway Hall, a neoclassical landmark on Billionaires’ Row.

The new show will take place Jan. 23-25, 2026.

The former BHP Billiton leader and Gemfields chairman is remembered for his influential leadership throughout his 50-year mining career.

The LVMH-owned brand has partnered with the costume design union to revamp its award for 2026.

The luxury titan inked a deal to acquire an initial minority stake in the jewelry manufacturer with a pathway to full ownership by 2032.

The company’s curation of unsigned vintage and estate jewelry debuted at the Bloomingdale’s in Costa Mesa, California.

In the recent multi-shipment seizure, CBP also found counterfeit Audemars Piguet, Moncler, and Chrome Hearts items.

Helzberg’s Chief Retail Officer Mitch Maggart shared details about its tests of a new store concept rooted in an elevated luxury experience.

Jewelers of America execs and National Jeweler editors discuss tariffs, the sky-high gold price, and the engagement that broke the internet.

The luxury goods company said founder Ippolita Rostagno will remain at the brand’s helm.

Laura Burdese, who joined the Italian luxury brand in 2022, will take on the role in July.

The National Jeweler editors revisit the most noteworthy industry happenings and design trends from 2025.

Need a gift for the cat lover who has everything? Look no further than our latest Piece of the Week.

It purchased the “Grosse Pièce,” an ultra-complicated Audemars Piguet pocket watch from the ‘20s, for a record-breaking price at Sotheby’s.

Chandler got his start at Michelson Jewelers and has served as DCA president and CEO since 2001. He will retire at the end of the month.

The boutique is slated to open this week inside Terminal 8, offering pre-owned Rolex watches and more to international travelers.

Sponsored by Digital Monitoring Products

The special-edition egg pendant ingested in a New Zealand jewelry store was recovered after a six-day wait.

Associate Editor Natalie Francisco plays favorites with Piece of the Week, selecting a standout piece of jewelry from each month of 2025.




















