Lab-Grown

RJC Is Developing a Standard for Lab-Grown Diamonds, Gems

Lab-GrownSep 27, 2021

RJC Is Developing a Standard for Lab-Grown Diamonds, Gems

It will be for all companies that deal in lab-grown materials.

2021_Lightbox factory 1.jpg
The Responsible Jewellery Council said it is developing a standard for lab-grown diamonds and gems. It will be available for all companies dealing in lab-grown materials, like De Beers Group, which grows diamonds at its factory outside Portland, Oregon, pictured here. (Photo courtesy of De Beers Group)
London—The Responsible Jewellery Council announced last week it is in the process of developing a standard for manufacturers and retailers that deal in lab-grown diamonds and gems.

The standard will be separate from RJC’s existing Code of Practices and will aim to establish best practices for the use of lab-grown diamonds and gems in jewelry. RJC said it will include social, environmental and business integrity requirements.

Executive Director Iris Van der Veken said developing a standard for lab-grown materials is important for the organization, as it underscores its goal of ensuring all jewelry is responsibly sourced, manufactured, and marketed.

“It is all about consumer confidence,” she said.

“This standard will provide a clear, robust framework not only for manufacturers and retailers, but also for reassuring customers that the manufacturers and sellers of [lab-grown materials] follow rigorous processes that ensure the credibility and transparency of their operations.”

The marketing of lab-grown diamonds, in particular, has been an issue in the past, with some companies not following Federal Trade Commission guidelines when advertising their products.

In the U.S., the FTC’s “Jewelry Guides” dictate that companies advertising lab-grown diamonds must use “clear and conspicuous” disclosure that appears in close proximity to the word “diamond.” 

 Related stories will be right here … 

The FTC’s recommended terms are: laboratory-grown, laboratory-created or [manufacturer name]-created. Cultured can be used but has to be “immediately accompanied, with equal conspicuousness” by one of the three aforementioned terms; it cannot stand alone.

The Jewelry Guides also state that anytime the word “diamond” appears by itself in advertising, it must be referring to a natural diamond.

RJC announced development of the standard last week and said it will consult with all stakeholders and follow the ISEAL “Standard-Setting Code of Good Practices” in developing it. ISEAL is a global membership organization for sustainability systems like RJC, the Rainforest Alliance, and the Forest Stewardship Council (FSC). 

Any and all interested parties are welcome to provide input and can contact RJC by sending an email to create@responsiblejewellery.com

The organization’s multi-stakeholder Standards Committee is managing the consultation and development process. 

RJC said it will start developing its new standard in Q4 this year and expects to finish in Q2 2022. The standard will receive a "robust" review before it is finalized.

The Latest

Headshot of Sherry Smith, National Jeweler columnist and vice president of coaching strategy and development at the Edge Retail Academy
ColumnistsFeb 04, 2026
January Jewelry Sales: More Dollars Spent, Fewer Units Sold

Sherry Smith unpacks independent retailers’ January performance and gives tips for navigating the slow-growth year ahead.

Saks Fifth Avenue New York storefront
MajorsFeb 04, 2026
What Designers Should Know About Saks Global’s Bankruptcy

From how to get an invoice paid to getting merchandise returned, JVC’s Sara Yood answers some complex questions.

Jacquie Aiche Raw Amethyst Cluster Starburst Diamond Ring
TrendsFeb 04, 2026
Amanda’s Style File: February Birthstone Bliss

Amethyst, the birthstone for February, is a gemstone to watch this year with its rich purple hue and affordable price point.

MJSA Apprenticeship Guide
Brought to you by
The MJSA Mentor & Apprenticeship Program: Attracting & Training the Next Generation of Bench Jewelers

Launched in 2023, the program will help the passing of knowledge between generations and alleviate the shortage of bench jewelers.

Matteo Cuelli
MajorsFeb 04, 2026
Marco Bicego Names New Global Marketing Director

The Italian jewelry company appointed Matteo Cuelli to the newly created role.

Weekly QuizJan 29, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Bryan Cowan, Thomas Schwartz, Liliana Estrella
MajorsFeb 04, 2026
Frederick Goldman Updates Leadership Team

The manufacturer said the changes are designed to improve speed, reliability, innovation, and service.

Stock image of shipping containers
Policies & IssuesFeb 03, 2026
Tariff Relief on Horizon for India as Trump, Modi Make Deal

President Trump said he has reached a trade deal with India, which, when made official, will bring relief to the country’s diamond industry.

JamAlert 1872x1052.png
Brought to you by
How Jewelers Can Fight Back Against Cell Jammers

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

Jade Trau Spring Summer 2026 Collection Campaign
CollectionsFeb 03, 2026
Jade Trau Releases New Charms, Introduces Rondelles

The designer’s latest collection takes inspiration from her classic designs, reimagining the motifs in new forms.

Casio Headquarters Jersey City, New Jersey
WatchesFeb 03, 2026
Casio America Calls Jersey City Home

The watchmaker moved its U.S. headquarters to a space it said fosters creativity and forward-thinking solutions in Jersey City, New Jersey.

Nivoda gemstones
SourcingFeb 03, 2026
Nivoda Reveals Upgraded Gemstone Marketplace

The company also announced a new partnership with GemGuide and the pending launch of an education-focused membership program.

International Gemological Institute logo
GradingFeb 02, 2026
IGI to Acquire American Gemological Laboratories

IGI is buying the colored gemstone grading laboratory through IGI USA, and AGL will continue to operate as its own brand.

Ylang 23 store burglary
CrimeFeb 02, 2026
Ylang 23’s Dallas Store Burglarized

The Texas jeweler said its team is “incredibly resilient” and thanked its community for showing support.

Tyla at 68th annual Grammy Awards
EditorsFeb 02, 2026
Stars Choose Chokers, Elongated Earrings at 2026 Grammys

From cool-toned metal to ring stacks, Associate Editor Natalie Francisco highlights the jewelry trends she spotted at the Grammy Awards.

Silver, Gold, and Bronze Medals for 2026 Winter Olympics
CollectionsFeb 02, 2026
2026 Winter Olympic Medal Design Symbolizes Unity

The medals feature a split-texture design highlighting the fact that the 2026 Olympics are taking place in two different cities.

Dawn dish soap, Dove soap, M&M candy, Tylenol
SurveysJan 30, 2026
These Are the Top Brands of 2026, Says YouGov

From tech platforms to candy companies, here’s how some of the highest-ranking brands earned their spot on the list.

Etiq Khol Ring
CollectionsJan 30, 2026
Follow the Beat With Etiq’s ‘Khol’ Ring

The “Khol” ring, our Piece of the Week, transforms the traditional Indian Khol drum into playful jewelry through hand-carved lapis.

Arch Crown Tag & Label 2026 Catalog
MajorsJan 30, 2026
Arch Crown’s 2026 ‘Tag & Label’ Catalog Is Here

The catalog includes more than 100 styles of stock, pre-printed, and custom tags and labels, as well as bar code technology products.

Ghirardelli Chocolocket
CollectionsJan 29, 2026
Ghirardelli’s ‘Chocolocket’ Returns for Valentine’s Day

The chocolatier is bringing back its chocolate-inspired locket, offering sets of two to celebrate “perfect pairs.”

Step-cut Colombian emerald ring London Jewels Bonhams
AuctionsJan 29, 2026
These Were Bonhams’ Top 10 Jewelry Lots in 2025

The top lot of the year was a 1930s Cartier tiara owned by Nancy, Viscountess Astor, which sold for $1.2 million in London last summer.

Red Rubies AGTA
SourcingJan 29, 2026
Stuller Website to Mark AGTA-Sourced Gemstones

Any gemstones on Stuller.com that were sourced by an AGTA vendor member will now bear the association’s logo.

Audemars Piguet Atlanta Store Artwork
WatchesJan 29, 2026
Audemars Piguet Opens AP House in Atlanta

The Swiss watchmaker has brought its latest immersive boutique to Atlanta, a city it described as “an epicenter of music and storytelling.”

Anza Gems gemstones
SourcingJan 28, 2026
Ethical Gem Fair to Debut Designer Showcase in Tucson

The new addition will feature finished jewelry created using “consciously sourced” gemstones.

National Jeweler columnist and jewelry sales expert Peter Smith
ColumnistsJan 28, 2026
Peter Smith: Setting the Next Generation Up for Success

In his new column, Smith advises playing to your successor's strengths and resisting the urge to become a backseat driver.

Hand holding shopping bags
SurveysJan 28, 2026
Consumer Confidence Falls Below Pandemic Lows in January

The index fell to its lowest level since May 2014 amid concerns about the present and the future.

Foundrae Aspen Store
IndependentsJan 28, 2026
Foundrae Heads to Aspen for Latest Store Opening

The new store in Aspen, Colorado, takes inspiration from a stately library for its intimate yet elevated interior design.

Bulgari Gioco di Forme e Colori watch and brooch
FinancialsJan 28, 2026
Tiffany & Co., Bulgari Sales Resilient as LVMH’s 2025 Sales Slip

The brands’ high jewelry collections performed especially well last year despite a challenging environment.

×

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