Grading

Worldwide, industry reacts to undisclosed synthetics

GradingDec 08, 2013

Worldwide, industry reacts to undisclosed synthetics

Synthetic diamonds--specifically those being passed off as natural--were one of the top stories in the jewelry industry last year, and it doesn’t look the man-made stones will be relinquishing their news-making reign anytime soon.

New York--Synthetic diamonds--specifically those being passed off as natural--were one of the top stories in the jewelry industry last year, and it doesn’t look the man-made stones will be relinquishing their news-making reign anytime soon.

The issue of undisclosed synthetics first came to light in a major way in May 2012 when hundreds of them turned up at a grading laboratory in Antwerp. This October, reports again surfaced about large volumes of undisclosed synthetic melee being mixed in with natural.

These latest claims touched off a wave of reactions from players all over the globe, including the Gem & Jewellery Export Promotion Council (GJEPC) in India, the Israel Diamond Exchange and, in the United States, the Diamond Manufacturers & Importers Association of America (DMIA).

The GJEPC said its concerns about mixing undisclosed synthetics with natural diamonds arose from media reports and two instances of "actual undisclosed mixing being detected." The organization formed a “special committee” to look into these two cases and, as of Monday, said the investigation was ongoing.

Recently, the GJEPC, along with a number of other India-based jewelry trade organizations, formed a Natural Diamond Monitoring Committee to enhance consumer confidence, ensure “proper segregation” of natural and synthetic stones and create policies to avoid the misrepresentation of lab-grown stones.  On Friday, the GJEPC, along with the Gemmological Institute of India, opened a Diamond Detection and Resource Center (DDRC) at the Bharat Diamond Bourse.

De Beers’ Varda Shine and Paul Rowley were on hand for the opening, along with GJEPC Chairman Vipul Shah. The center will provide detection services for any parcels submitted, offer resources creating awareness about lab-grown diamonds and testing methods, and provide services to diamond companies, including on-the-job training of staff in detection methods.

In the U.S., a group of industry organizations led by the DMIA plans to hold an invitation-only meeting in New York on Jan. 8 to discuss the issue.

DMIA President Ronnie VanderLinden said representatives from law enforcement as well as from a number of key industry organizations, Jewelers of America and the American Gem Society among them, will attend the meeting.  So will representatives from three grading labs: the Gemological Institute of America, the International Gemological Institute and the European Gemological Laboratory (EGL USA).

The goal of the DMIA meeting in New York is to “put enforceable measures in place to prevent synthetics (from) being presented as natural diamonds,” the organization said.

Meanwhile, in Israel, the Israel Diamond Exchange announced recently that it is creating an “awareness campaign” for synthetic diamonds, a campaign that kicked off Sunday with a speech in Israel by industry journalist and consultant Chaim Even-Zohar. 
Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

trend retail.jpg
PodcastsJan 12, 2026
The latest poscast

test

Screenshot from 2026-01-12 06-22-03.png
PodcastsJan 12, 2026
New podcast without sponsor

test

20210205_Alexia_Connellan_Gatsby_earrings.jpg
TrendsJan 12, 2026
New test Article

test article

trend ss21@2x.jpg
Brought to you by
new sponsored article

test

2019_De_Beers_rough_NEW_1.jpg
PodcastsJan 12, 2026
New sponsored podcast

test

Weekly QuizOct 03, 2024
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
MNQ FINAL - NJ web - 1872 x 1052 px.png
PodcastsJan 12, 2026
Introducing My Next Question, the Podcast

A monthly podcast series for jewelry professionals

Screenshot from 2025-12-31 12-03-28.png
PodcastsDec 31, 2025
Test new podcast post

Test new podcast post

Jewelers Mutual Group Cybersecurity
Brought to you by
Navigating Cybersecurity: Essential Guidance for Jewelers

From protecting customer data to safeguarding inventory records, it's crucial to learn how to tackle cybersecurity challenges.

MNQ - studio - screen -1920 x 1080.png
PodcastsDec 29, 2025
Molly Test Podcast Episode

This is the abstract for Molly Test Podcast Episode

image 169 (4 col).png
PodcastsDec 10, 2025
Podcast With Video

Podcast Without Video or Audio or Image

image 169 (4 col).jpg
Recorded WebinarsDec 04, 2025
New Recorded Webinar for tests

New Recorded Webinar for tests

User-Avatar-PNG-Picture.png
PodcastsDec 03, 2025
Test Article Title

test Abstract

20210204_Couture_show_shot.jpg
PodcastsDec 02, 2025
New podcast

test desc

Screenshot from 2025-12-05 13-54-41.png
PodcastsNov 27, 2025
Test Podcast With Video

Test Podcast With Video. New interview with Ada Lovelace.

Image for tests
PodcastsNov 25, 2025
Test New Podcast Post

Abstract for tests. New Podcast interview with John Lennon, Jimi Hendrix and Jim Morison.

National Jeweler columnist Peter Smith
ColumnistsOct 09, 2024
Peter Smith: 7 Things to Know When Selling Luxury

Ahead of the holiday season, Smith delves into the often subconscious reasons people buy luxury products for themselves or their loved ones.

Edgar Mitchell wearing Rolex watch on Apollo 14
AuctionsOct 09, 2024
Rolex Worn on Apollo 14 Mission Up for Sale

The GMT-Master “Pepsi” belonging to astronaut Edgar Mitchell is a standout in RR Auction’s online “Space Auction,” going on now.

Simon meet me at the mall campaign
MajorsOct 09, 2024
New Simon Campaign Invites Gen Z to ‘Meet Me At The Mall’

The ads celebrate the mall culture of the ‘80s and ‘90s.

Platinum Guild International training
MajorsOct 09, 2024
PGI Launches New Virtual Sales Training

Retail sales associates can access the video series on mobile to refresh their selling skills.

Gathering at Bharat Diamond Bourse for COVID vaccinations
Policies & IssuesOct 09, 2024
GJNRF: Reaching Out, Rebuilding Futures

For 25 years, India’s Gem & Jewellery National Relief Foundation has provided aid in the wake of war, natural disasters, and global crises.

Sotheby’s A Tsar’s Treasure: Ferdinand of Bulgaria
AuctionsOct 08, 2024
Sotheby’s Selling Jewelry That Belonged to a Bulgarian Tsar

The November auction will feature a collection of jewels owned by Ferdinand I, the first king of modern Bulgaria, and his family.

Rough diamonds mined at the Diavik Diamond Mine
SourcingOct 08, 2024
Rio Tinto Begins New Phase of Production That Will Extend Diavik’s Life

Commercial production has begun underground at the Canadian diamond mine’s A21 pipe.

Stock image of hand holding phone by keyboard
SurveysOct 08, 2024
What to Know About Online Shopping This Holiday Season

Deloitte and Adobe Analytics shared their insights on the season, from the retail sales forecast to the role of generative AI.

Sylvie and Uncommon Man Campaign
CollectionsOct 08, 2024
Sylvie Adds New Men’s Bands

The Texas-based jeweler collaborated with luxury clothing brand Uncommon Man on men’s bands designed with European influences.

Diamond on polishing wheel Venus Jewel India
SourcingOct 08, 2024
Is Current Diamond Industry Turbulence Shaping a ‘New Normal’?

Industry players have found ways to cope with market conditions while working to reshape themselves in the face of emerging realities.

Rio Tinto 2024 Beyond RareTM Tender Art Series
SourcingOct 07, 2024
Rio Tinto to Offer 76 Diamonds in 2024 Beyond Rare Tender

The sales event, in its second year, features a selection of rare diamonds from the miner’s Argyle and Diavik diamond mines.

Kristi Yamaguchi and Scott Heller
CollectionsOct 07, 2024
Olympian Kristi Yamaguchi Partners With Heller Jewelers on New Collection

A portion of the proceeds from the “Always Dream” collection will go to Yamaguchi's foundation, supporting early childhood literacy.

×

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