IndependentsMar 14, 2025
Stafford’s Diamonds in Ohio to Close After 40 YearsThe Dayton-based jeweler, which has been in business since 1985, was formerly known as Stafford Jewelers.
GradingMar 15, 2017
GIA Detects 101 Undisclosed Synthetics in Melee Parcel
Nearly one-third of the diamonds in a parcel screened by the GIA’s Mumbai lab were found to be lab-grown diamonds.
Mumbai--The Gemological Institute of America recently screened a parcel of diamond melee and found that nearly a third of the stones were undisclosed synthetics.
The GIA confirmed to National Jeweler that of a parcel containing 323 diamonds, 101 were lab-grown stones. The parcel had been submitted for screening to the GIA’s Mumbai lab and the diamonds were detected using the GIA’s new melee diamond analysis service.
The GIA launched its melee diamond analysis service in December last year. The fully automated system screens between 1,800 and 2,000 stones an hour, separating natural, untreated stones from treated and lab-grown ones, both HPHT (high-pressure, high-temperature treatment) and CVD (chemical vapor disposition).
The service also separates diamonds by color range.
The 101 synthetic diamonds caught in Mumbai were grown using the CVD process, the GIA said.
For its melee analysis service, the GIA accepts round D to Z diamonds from 0.90 to 4.00 mm in size, or roughly 0.005 to 0.25 carats.
Since introducing the melee screening service in most of its labs worldwide, this is the first time the GIA “has seen such a significant percentage of CVD melee mixed with natural melee,” a spokesperson told National Jeweler.
The GIA declined to comment when asked if they believed the inclusion of the undisclosed lab-grown stones was intentional or if they would pursue any type of action against the submitter.
The detection of lab-grown melee is one of the biggest challenges facing diamond grading labs today, as they work to develop machines that can quickly and cost effectively screen small stones.
In addition to the GIA’s recently launched melee screening service, De Beers just introduced the second, substantially cheaper version of its Automated Melee Screener.
Editors' Picks
Sponsored by
More on Grading
The Latest
Events & AwardsMar 14, 2025
JVC Reveals Recipient of Stanley Schechter AwardReeds Jewelers CEO Alan Zimmer will be presented with the honor at JVC’s annual luncheon.
CollectionsMar 14, 2025
Piece of the Week: Sorellina’s Aries Zodiac PendantThe piece, celebrating birthdays from March 21 to April 19, debuted with Sorellina’s new line of astrological pendants.
Brought to you by
Watch: GIA Field Gemology at the One-Hundredth Expedition: A Look Back and to the FutureSupplier Spotlight Sponsored by GIA
MajorsMar 13, 2025
Tanishq Opens 2 New Stores in the U.S.The Indian jewelry brand recently opened stores in Atlanta and Seattle.
Weekly QuizMar 14, 2025
This Week’s QuizTest your jewelry news knowledge by answering these questions.
FinancialsMar 13, 2025
Brilliant Earth’s 2024 Sales Struggled Amid Engagement RecoveryCEO Beth Gerstein shared its most popular price points, what’s trending in non-bridal fine jewelry, and its holiday performance.
CollectionsMar 13, 2025
Chopard Unveils High Jewelry Collection Created From 6,225-Carat Emerald The 15 pieces were crafted from the “Insofu” emerald, discovered in Zambia in 2010.
Brought to you by
Natural Diamonds Should Mean MoreNatural diamonds mean more than lab-grown, but when every cut is ideal, they all look the same. Customers want more—Facets of Fire delivers.
MajorsMar 13, 2025
Jewelers Mutual Names New CFO, TreasurerChris Anderson is joining the insurance provider as the new chief financial officer and treasurer.
Lab-GrownMar 13, 2025
JA Offering Some ‘Counter Intelligence’ on Diamonds Jewelers of America is distributing a brochure for retailers to use when discussing the differences between natural and lab-grown diamonds.
SourcingMar 12, 2025
5 Factors That Will Impact the Diamond Industry in 2025The industry is changing as it grapples with new realities around distribution, supply, and the need for consistent, effective marketing.
SourcingMar 12, 2025
Q&A: New GJEPC Chairman Kirit BhansaliBhansali discusses the potential impact of U.S. tariffs, demand for diamonds by market, and the “cautious confidence” in India right now.
Lab-GrownMar 12, 2025
Beyond Jewelry: Possibilities in the Lab-Grown Diamond SectorAs lab-grown diamond brands pop up across India, academics are researching how to grow demand outside of the jewelry industry.
SourcingMar 12, 2025
Indian Leader, Retailer Among 2025 DDG Honorees Govind Dholakia and Tanishq will be recognized for their contributions to the industry at the Diamonds Do Good Awards in Las Vegas.
IndependentsMar 12, 2025
Marla Aaron Migrates to LondonThe New York City-based brand has opened its first U.K. location with a permanent shop-in-shop at Liberty in London.
AuctionsMar 12, 2025
A Medieval Bishop’s Sapphire Ring Is Going Up for SaleA metal detectorist discovered the ring that is believed to have belonged to a bishop in the late 12th to early 13th century.
Events & AwardsMar 12, 2025
JA New York Announces Education, Live Demo LineupsOrganizers looked to new partnerships and interactive experiences to enhance the spring show, set for March 16 to 18.
Events & AwardsMar 12, 2025
Bogolo Joy Kenewendo to Speak at Annual JVC LuncheonKenewendo, Botswana’s minister of minerals and energy, will discuss the future of diamonds.
CrimeMar 11, 2025
Man in Florida Swallows Allegedly Stolen Tiffany & Co. Jewelry The suspect allegedly stole almost $800,000 worth of diamond jewelry from a store in Orlando and then swallowed it during a traffic stop.
ColumnistsMar 11, 2025
Creative Connecting: How to Pose on the Red CarpetAhead of the Gem Awards on Friday, Jen Cullen Williams and Duvall O’Steen share pro tips for taking the best photos.
CollectionsMar 11, 2025
Marco Bicego Celebrates 25 Years With Collection, CampaignFounded in 2000, Marco Bicego is commemorating its milestone anniversary with a “25 Best” collection and campaigns honoring its heritage.
TechnologyMar 11, 2025
Hill & Co. Launches New B2B Buyer DatabaseThose attending the company’s upcoming Zoom workshop will receive early access to “The List,” its new resource for finding buyers.
Events & AwardsMar 11, 2025
JSA to Honor GIA Employee at Annual LuncheonThe organization will present an award to Amy-Elise Signeavsky, law enforcement and diamond recovery manager at GIA.
MajorsMar 10, 2025
Terry Chandler to Retire After 24 Years as Head of DCA Chandler started his jewelry career at Michelson Jewelers, joining the Diamond Council of America as president and CEO in 2001.
CollectionsMar 10, 2025
MaeVona Co-Founder Debuts 3D-Printed ‘Tùsaire’ CollectionScottish American designer Maeve Gillies collaborated with Platinum Guild International on jewelry created by direct metal 3D printing.
Events & AwardsMar 10, 2025
The Jewelry Symposium Announces 2025 Scholarship WinnersAhead of its trade show in May, TJS awarded free registration and accommodations to five up-and-coming jewelry industry professionals.
Events & AwardsMar 10, 2025
These Designers, Journalists, and Retailers Are Up for a Gem Award The 2025 Gem Awards are set to take place Friday at Cipriani 42nd Street in New York City.
