Lab-Grown

AGS Labs Resumes Grading of Lab-Grown Diamonds

Lab-GrownAug 04, 2020

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.

20200804_AGS-Labs-header.jpg
A sample of AGS Labs’ new Laboratory-Grown Diamond Grading Report
Las Vegas—AGS Laboratories will once again grade lab-grown diamonds, the organization announced Monday. 

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. 

Unlike GIA, AGS is using the standard color and clarity grading scales for lab-grown diamonds but adding “LG” (for “laboratory-grown”) to the grades.

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.

A shot of the Only My Diamond platform, which is where AGS Labs’ Laboratory-Grown Diamond Grading Report is housed
A shot of the Only My Diamond platform, which is where AGS Labs’ Laboratory-Grown Diamond Grading Report is housed

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.” 
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Jewelers of America Fly In
Policies & IssuesSep 25, 2025
JA CEO Provides Tariff Update Following Annual Fly-In

A trade deal with Switzerland seems probable, but reaching an agreement with India remains a challenge, David Bonaparte said.

Entrance to Jwaneng diamond mine in Botswana
SourcingSep 25, 2025
2 African Countries Aim to Take Stake in De Beers

Botswana’s president said his country wants a controlling share, while Angola envisions multiple countries holding minority stakes.

Alex Moss SoHo store
IndependentsSep 25, 2025
Alex Moss’ New Flagship Brings Bold Jewels to SoHo

The jeweler to the stars has worked with Drake, A$AP Rocky, Tyler the Creator, and other celebrities.

reDollar-fine-jewelry-department.jpg
Brought to you by
reDollar.com Is Rolling Out the Next Level Jewelry, Diamond & Watch Consignment Program

With their unmatched services and low fees, reDollar.com is challenging some big names in the online consignment world.

Matthew Wilson, Kavin Kulamavalava, and a Elmasolvex VA
WatchesSep 25, 2025
Wilson & Son Jewelers Donates to the Horological Society of New York

The Scarsdale, New York-based jeweler donated a professional-grade watch cleaning machine.

Weekly QuizSep 25, 2025
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Representatives of India’s Gem and Jewellery Export Promotion Council and Indian government leaders
Policies & IssuesSep 24, 2025
Tariffs Throw Diamond Trade Into Disarray

The 50 percent tariffs on diamonds shipped from India to the U.S. have pushed midstream manufacturers to the edge.

Father’s Day diamond advertisement that ran in India
SourcingSep 24, 2025
De Beers Adopts New Strategies to Drive Natural Diamond Demand in India

De Beers’ refreshed, multipronged approach, which includes generic promotions and retail partnerships, is delivering positive dividends.

japac-btyb.png
Brought to you by
Rallying Call for the Jewelry Industry on Tariffs and Other Key Issues

Jewelers of America is leading the charge to protect the industry amidst rising economic threats.

Policies & IssuesSep 24, 2025
For Jewelry Manufacturers, Higher Tariffs Create Long-Term Worries

They are trying to balance the need to sustain well-established relationships with the pressure higher tariffs have put on margins.

Guest lecture for people with disabilities at the Jewelex factory
SourcingSep 24, 2025
A Helping Hand: An Effort to Boost Inclusivity in the Industry

Jewelry manufacturer Jewelex has partnered with JOSH, an industry training center, on a program for people with disabilities.

Greenwich St. Jewelers Estate Capsule Campaign
CollectionsSep 24, 2025
Greenwich St. Jewelers Goes Back in Time With First Estate Collection

The collection includes pieces dating back to the Victorian and Art Deco periods as well as mid-century and late 20th-century designs.

Marcus ter Haar
Policies & IssuesSep 24, 2025
Diamonds Do Good Names Marcus ter Haar as President-Elect

He previously served as co-chair of the nonprofit’s beneficiary committee.

Jane Goodall Brilliant Earth campaign
CollectionsSep 24, 2025
Brilliant Earth’s New Jane Goodall Collection Calls for Peace

Its second collaboration with the conservationist features jewelry with dove and olive branch motifs.

SRK Kriam Pharma
SourcingSep 24, 2025
SRK Launches Kriam Pharma

The diamond manufacturer’s new company will provide accessible and affordable high-quality medicines across India.

Emmanuel Raheb, CEO of Smart Age Solutions and National Jeweler columnist
ColumnistsSep 23, 2025
Quiet Luxury: What Fall’s Top Trend Means for Jewelers

Emmanuel Raheb shares tips on how a jeweler’s showcases, marketing, and social media presence can whisper, instead of shout.

Claire’s storefront
MajorsSep 23, 2025
Ames Watson Completes $140M Acquisition of Claire’s

The private equity firm has a plan to revive the mall staple.

Super Smalls Super Book of Gems, Maria Dueñas Jacobs, and Bianca Gottesman
SourcingSep 23, 2025
Super Smalls’ New Book Introduces Kids to Gems, Fine Jewelry

The “Super Book of Gems” dives into the Mohs Hardness Scale, the Four C’s, and designs from jewelers like Cartier and Bulgari.

Mattioli CEO Claudio Pasta
MajorsSep 23, 2025
Mattioli Names Kering Exec as New CEO

Claudio Pasta will take the lead at the Italian fine jewelry brand, succeeding company founder Licia Mattioli.

Monique Lhuillier fashion jewelry Kay
CollectionsSep 23, 2025
Monique Lhuillier Adds Fashion Jewelry to Kay Jewelers Line

The new lab-grown diamond jewelry offering is the latest expansion of the designer’s “Bliss” collection.

Rio Tinto tender
SourcingSep 22, 2025
Rio Tinto Announces Final ‘Beyond Rare’ Tender

The miner is honoring the end of an era with an offering of 52 lots from the now-closed Argyle and the soon-to-close Diavik mines.

Vibhor and Alor logos
MajorsSep 22, 2025
Jewelry Manufacturer Vibhor Acquires Alor

The California-based fine jewelry brand will retain its identity post-acquisition, with new collections launching next year.

Gurhan Crown Gold Aquamarine Peacock
CollectionsSep 22, 2025
Gurhan's Collection is an 'Untamed' Zoo

The “Untamed” collection centers on carved gemstone jewelry depicting a range of animals embodying one of the four elemental forces.

Community for Ethical Jewelry logo
Policies & IssuesSep 22, 2025
Ethical Metalsmiths Has a New Name

Founded in 2004, the organization is now called the Community for Ethical Jewelry.

Madison Keys
EditorsSep 19, 2025
These Female Athletes Had the Best Jewelry of the Summer

From Coco Gauff’s hoops to Madison Keys’ diamond medallion, these are Senior Editor Lenore Fedow’s standout jewelry looks of the season.

Vanessa Fernández Studio Curva Wrap Hoops
CollectionsSep 19, 2025
Piece of the Week: Vanessa Fernández Studio’s ‘Curva’ Wrap Hoops

The trendy earrings feature asymmetrical drops, one with a grossular garnet and the other with a diamond.

Graphic for A Step-by-Step Guide to Using TikTok and Instagram Reels webinar
Recorded WebinarsSep 19, 2025
Watch: A Step-by-Step Guide to Using TikTok and Instagram Reels

Four social media marketing experts discuss their go-to methods and favorite tools for making high-quality short-form video content.

agta-sb-0925.png
Supplier BulletinSep 18, 2025
Will Your Design Define 2026? Enter The Spectrum & Cutting Edge Awards

Sponsored by American Gem Trade Association

×

This site uses cookies to give you the best online experience. By continuing to use & browse this site, we assume you agree to our Privacy Policy