The top lot of the auction house’s Hong Kong jewelry sale was an Art Deco Mauboussin necklace with ruby beads, which sold for $2 million.
AGS Labs Resumes Grading of Lab-Grown Diamonds
It will use the same color and clarity grading scales that are used for natural diamonds but add a special designation.

The lab stopped offering the service in 2013 due to a lack of demand, Executive Director Jason Quick told National Jeweler.
Now, as demand for man-made stones has picked up, AGS Labs wanted to take a “fresh approach” to the grading report.
The new report for lab-grown diamonds is the result of more than a year of research and development to create one that aligns with AGS Labs’ mission of consumer protection and ensures consumers understand what they’re getting, Quick said.
The system is designed to distinguish the grading from natural diamonds while also providing a basis for comparison, Quick said.
For example, a lab-grown diamond could receive an “LG-D” color grade and an “LG-VS1” clarity grade.
The reports also will contain the following statement: “It is important to note that the color and clarity grades do not reflect the rarity of a laboratory-grown diamond, but rather the quality and consistency of the manufacturing process.”
AGS Labs’ lab-grown diamond grading reports also will offer the standard AGS 0 to 10 cut-grade scale, including the AGS Ideal cut grade, but does not utilize the “LG” designation used for color and clarity.
Additionally, the new report will contain a description of the laboratory-grown growth method used.
“We feel like that is important for the consumer to understand the details behind how the laboratory-grown diamond was created,” Quick said.
It will also offer explanations of the differences between the high pressure-high temperature (HPHT) and chemical vapor deposition (CVD) processes.
AGS Laboratories is starting with a pilot program for the lab-grown diamond reports and will open the service more broadly to the industry later this year.
The Laboratory-Grown Diamond Grading Report will be in a digital form only to start.
It’s a component of Only My Diamond for Laboratory-Grown Diamonds, an interactive online tool featuring additional educational information, including a special section on the 4Cs of man-made diamonds.
When asked if AGS Labs would eventually expand to printed reports, Quick said it will “re-evaluate enhancements throughout the pilot program.”
The Latest

Retailers and manufacturers headed to the Capitol this week to discuss tariff exemptions for diamonds and gemstones, among other issues.

Our Piece of the Week is a pair of drop earrings from the “Sway” collection featuring Nanis’ first use of mirror-polished gold.

Experience gemstones with greater precision and comfort than ever before.

SynthDetect 2 can scan a full tray in less than five minutes, De Beers said, making it six times faster than its predecessors.


Two metal detectorists discovered the ring, which may have belonged to English noblewoman Matilda of Lancaster, in Suffolk.

The bill has a provision that allows the president to raise tariffs on countries that import Russian oil and gas to as much as 100 percent.

Submit your pieces for a chance to win in this year's competition.

The American Gem Society presented the annual award to a former president of its board.

The “Chrysalis” capsule centers butterfly motifs representing growth, transformation, and the unfolding of who you are.

Jewelers of Louisiana presented Patton, the third-generation president of Pattons Fine Jewelry, with the award at its annual convention.

Two special guests join the podcast to commemorate the 10th anniversary of the designer advocate, mentor, and author’s untimely passing.

McCormack brings sea-inspired motifs from her “Beaches” collection to L’Objet’s tableware, vanity pieces, and first-ever cutlery set.

Nine New Jersey jewelers have been victims of smash-and-grab robberies this year, prompting JSA to circulate a list of recommendations.

Marlin “Brian” Hood, who has been with the store for 20 years, will succeed Ricky Bromberg, who died earlier this month.

The new bridal catalog features the latest jewelry collections and designs from timeless classics to modern silhouettes.

Stars wore either a necklace or earrings at 78th Primetime Emmy Awards but rarely both, Natalie Francisco notes.

Jennifer Shaheen compares this new era of AI-powered SEO to a video game: your website must clear one level before advancing to the next.

The program highlights “Made in Italy” fine jewelry with digital merchandising, sales education, and local marketing support.

Hilson, Signet’s chief operating and financial officer, discussed Q2, resurgent natural diamond demand, and why Blue Nile is a standout.

The stores that have a great December are the ones that made good decisions in August, September, and October, Sherry Smith writes.

The 22.09-carat fancy yellow “Pragnell Kimberley Sunshine Diamond” is part of the fall jewelry sale at Heritage Auctions.

“Adornos: Jewelry, Memory & What We Pass Down” honors the jewelry’s importance to New York City’s Latine communities.

The company’s managing director of sales said the results demonstrate “continued strong demand for commercial-quality emeralds.”

The nonprofit awarded a grant to the Gift of Sight initiative spearheaded by South African musician Black Coffee.

The Latine-owned New York jeweler is marking two milestones this year: its 50th anniversary and the 25th anniversary of the 9/11 attacks.

The jewelry retail broadcast network has sponsored a new space for Make-A-Wish East Tennessee on its campus in Knoxville.























