Grading

Stuller acquires De Beers’ melee screener

GradingMay 11, 2016

Stuller acquires De Beers’ melee screener

Sightholder and supplier Stuller Inc. is one of two United States companies now using De Beers’ Automated Melee Screening device, which is designed to tell small lab-grown diamonds from natural ones. 


The AMS device developed by De Beers’ International Institute of Diamond Grading&Research shoots stones out into one of five bins: pass, refer, refer Type II, non-diamond and purge, for when the user needs to abort the current test and star
Lafayette, La.--Sightholder and supplier Stuller Inc. is one of two United States companies now using De Beers’ Automated Melee Screening device, which is designed to tell small lab-grown diamonds from natural ones. 

Stanley Zale, Stuller’s vice president of diamonds and gemstones, said Monday that the company purchased one of the machines and received it two weeks ago. While Stuller did consider using the machine to test stones for their retail customers, the company has opted to use it only for its own inventory. 

Stuller began running melee through the AMS device right away and, so far, hasn’t found a single lab-grown diamond among the thousands of stones it’s scanned, Zale says. 

He says the same is true for the HRD D-screening the company has been doing for years on diamonds 20 points and larger to check for synthetics. This process allows Stuller to detect if a diamond is Type IIa, which is rare in nature but common among lab-grown diamonds, and send it to a grading laboratory for further testing if so. 

To date, none of those diamonds have come back as lab-grown either, though Zale says having the HRD D-screening and AMS device are necessary today. “This is an insurance policy for the integrity of our business,” he says. 

RELATED CONTENT: De Beers deploys first wave of melee screeners

De Beers began deploying its AMS device in early July to sightholders around the world. Mumbai-based Kiran Gems along with Tasaki and Rosy Blue in Japan are among those companies using the machine. De Beers could not release the name of the second U.S. company to have one of the AMS devices by press time. 

The AMS device screens stones between 1 point (1.3 mm) and 20 points (3.8 mm) in size, automatically feeding the stones table-down into a testing station and then dispensing them into separate bins indicating if they pass (are natural diamonds), need further testing, or are not diamonds at all. 

It takes up to 500 carats of colorless or near-colorless melee at a time and scans one stone every 10 seconds. The cost of the AMS device, which can be left to run

unattended, is $55,000 plus a three-year, $10,000-a-year support and maintenance charge, according to De Beers. 

Stanley said in receiving the machine from De Beers, Stuller also receiving a set of statistical sampling guidelines for testing melee--i.e., for every “X” number of carats of melee, run “X” percentage through the machine--noting, “You cannot check every stone. It’s not reasonable. It’s not realistic.”  

Michelle Graffis the editor-in-chief at National Jeweler, directing the publication’s coverage both online and in print.

The Latest

Future Fortune sapphire ring
TechnologyMar 28, 2024
Pinterest’s 2024 Wedding Report Is Out

The report shows that couples are searching for vintage and antique rings, gold jewelry, pearls, and colorful pieces.

David Ettinger
IndependentsMar 28, 2024
David Ettinger of Bechdel Jewelers Dies at 69

He’s remembered as a “font of passion,” leaving behind a legacy of dedication to his craft and community.

Jewelers of America logo
IndependentsMar 28, 2024
JA to Host Series of Learning Workshops

The first one will take place next month during the Jewelers of Louisiana’s and Mississippi Jewelers Association’s conventions.

Jewelers of America Fly In Washington, D.C.
Brought to you by
How Jewelers of America Represents Your Business

For over 30 years, JA has advocated for the industry, fought against harmful legislation and backed measures that help jewelry businesses.

Jaeger-LeCoultre Madison Avenue NYC store
WatchesMar 28, 2024
Peek Inside Jaeger-LeCoultre’s Revamped NYC Flagship

The redesigned boutique features interactive displays and a workshop space for hands-on learning about watchmaking.

Weekly QuizMar 28, 2024
This Week’s Quiz
Test your jewelry news knowledge with this short test.
Take the Quiz
Asian Star’s diamond manufacturing facility in India
SourcingMar 27, 2024
Compliance, Caution, and Concern: The Current Outlook of Indian Diamantaires

There is a willingness to comply with new government-mandated regulations, with an insistence that they should be practical and realistic.

Kira Diam solar plant
Lab-GrownMar 27, 2024
Indian Lab-Grown Diamond Manufacturers Keep Growing

A combination of factors is driving growth in the industry despite the precipitous drop in prices across the board.

BTYB-HoBrothers-updated.png
Brought to you by
The Scalable, Professional, and Effortless Solution for High-Demand Custom Jewelry Retailers

Ho Brothers offers scalable solutions for the future of custom jewelry.

Bharat Ratnam, a Mega Common Facilitation Centre (CFC)
SourcingMar 27, 2024
Reinvigorating SEEPZ, the Epicenter of India’s Studded Jewelry Exports

The zone’s modernization will enhance and increase India’s jewelry manufacturing capabilities while aiding small and mid-sized businesses.

SRK Empire and SRK House
Policies & IssuesMar 27, 2024
SRK Exports’ Journey Toward Net Zero Impact

By the end of this year, SRK’s diamond manufacturing complexes will achieve net zero emissions, one of an impressive array of achievements.

Georgia May Jagger Tommy Hilfiger ad campaign
FinancialsMar 27, 2024
Movado’s Full-Year Sales Sink 11%

The company plans to invest $25 million in marketing initiatives to boost awareness around its namesake and licensed brands.

Hand holding shopping bags
SurveysMar 27, 2024
Consumer Confidence Held Steady in March

Optimism about the current state of the economy was offset by anxiety around inflation and the political environment.

Bernadette Mack
Policies & IssuesMar 27, 2024
Mercury Free Mining Hires Bernadette Mack

The former WJA executive director is MFM’s new managing director.

April Is Diamonds Do Good Month
Policies & IssuesMar 27, 2024
Diamonds Do Good Announces Its April Initiative

DDG encourages retailers to educate customers on the positive impact of purchasing natural diamonds.

Tiffany & Co. With Love, Since 1837
MajorsMar 26, 2024
Tiffany & Co. Debuts ‘With Love, Since 1837’ Campaign

Highlighting the most iconic Tiffany collections, it’s inspired by the company’s late window designer, Gene Moore.

National Jeweler columnists Duvall O’Steen and Jen Cullen Williams
ColumnistsMar 26, 2024
Creative Connecting: AI Tools and Tips for Social Media

Jen Cullen Williams and Duvall O’Steen explore how jewelers can save time and money by using AI to analyze engagement and create content.

Nordstrom Men’s Store New York City
MajorsMar 26, 2024
Nordstrom May Go Private, Says Report

The retailer previously turned down an $8.4 billion offer in 2018.

Interior of Miami Lakes Jewelers
IndependentsMar 26, 2024
Miami Lakes Jewelers to Close After 37 Years

The Florida store’s owner Miguel Gonzalez is retiring.

Kendra Scott lab-grown diamond jewelry
CollectionsMar 25, 2024
Kendra Scott Debuts Lab-Grown Diamond Fashion Jewelry

The brand also plans to expand its retail footprint from 138 to 200 stores over the next three years.

Instappraise logo NAJA logo
Events & AwardsMar 25, 2024
NAJA, Instappraise Offering Scholarships for Aspiring Jewelry Appraisers

One is reserved for a NAJA member, the other for a non-member.

Carie Lehrke and Megan Mattice
MajorsMar 25, 2024
Borsheims Announces New VP of HR, Assistant Manager

Longtime employees Carie Lehrke and Megan Mattice have received promotions.

My Next Question graphic vintage jewelry webinar
Recorded WebinarsMar 22, 2024
Watch: How to Buy and Sell Vintage Jewelry

Three guests joined National Jeweler and Jewelers of America to discuss trending time periods, spotting reproductions, and more.

Chris Clipper and Robert Lepere
MajorsMar 22, 2024
David Yurman Announces New CFO, Chief People Officer

Chris Clipper and Robert Lepere join the company with 50 years of combined experience.

Nakard pyrite earrings
CollectionsMar 22, 2024
Piece of the Week: Nakard’s Pyrite Earrings

The trendy, metallic earrings wink at classic spring colors.

Stock image of police cars with their lights on
CrimeMar 21, 2024
Sparks Fly as Burglars Lose Safe on California Freeway

JSA said a man and woman pulled the safe out of an Oakland jewelry store but couldn’t quite get it into their van.

Grizzly Mining rough emeralds
SourcingMar 21, 2024
Grizzly Sells 4,145-Carat Emerald for Over $1M

The miner’s March auction generated $19 million.

Helen McCluskey
MajorsMar 21, 2024
Signet Jewelers Names New Board Chair

Helen McCluskey will succeed H. Todd Stitzer when he meets his 12-year term limit in June.

×

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