ColumnistsMay 26, 2026
The Key Mindset for Better Trade Show BuyingBuying discipline at trade shows starts with clarity about your inventory levels, Smith writes.
CrimeMar 03, 2016
Police Investigating $5-10M Diamond District Theft
The New York Police Department is looking into the theft of as much as $10 million in diamonds from the safe of a company headquartered in the city’s jewelry hub.
New York--The New York Police Department is looking into the theft of as much as $10 million in diamonds from the safe of a company headquartered in the city’s Diamond District.
News about the missing stones first surfaced late last week. Reuters and a number of other news outlets reported the name of the diamond dealer as Jonathan Birnbaum of J. Birnbaum Inc., but National Jeweler confirmed via a number of sources on Monday that it is Jonathan Birnbach, owner of J. Birnbach Inc., who reported that diamonds had been stolen from his New York City office.
While the NYPD would confirm little beyond the fact that an investigation is ongoing into a formal complaint of grand larceny, the New York Daily News reported that Birnbach first made police aware of the theft last Wednesday.
According to the News, he told police he had placed three wooden boxes of diamonds in the safe on Nov. 24, but hadn’t noticed they were missing until this month because he wasn’t working with those particular gems.
Birnbach also reportedly said the safe was left unlocked during business hours so he and his employees could get in and out of it easily throughout the work day, which isn’t unusual for a company in the Diamond District. However, one diamond dealer told National Jeweler that if there were people in the office who are not employees or regular visitors (e.g., construction workers), then protocol would dictate that the safe be locked.
Sources told the News that police are interviewing contractors who reportedly were doing construction work in the building during the time the gemstones disappeared, and also are reviewing footage from J. Birnbach’s video surveillance system.
A woman who answered the phone Monday at J. Birnbach’s office said the company had no comment on the case.
Jonathan Birnbach, who spent years working for his father Max’s company, Fullcut Manufacturers, opened J. Birnbach in 1996. A year later, he was joined by Udi Moritz. The company specializes in cutting high-quality diamonds and has a collection of one-off pieces of platinum and diamond jewelry.
More on Crime
The Latest
Events & AwardsMay 26, 2026
12 JCK Talks Sessions to Add to Your Las Vegas ScheduleThe trade show’s education series returns, with sessions on retail trends, AI, watches, marketing, corporate responsibility, and more.
Events & AwardsMay 26, 2026
CBG Brings Its Curated Designer Project to Las Vegas ShowThe Curated Designer Project has expanded to highlight eight independent jewelry designers during CBG’s Las Vegas show.
Brought to you by
All Eyes on Gold Prices. Alternatives to Look For. And What to BEWARE of in VegasAs gold prices rise, today’s retailers are looking for alternatives at prices that will appeal to wider audiences.
TrendsMay 26, 2026
Amanda’s Style File: A Cooldown Is ComingBring a cool tone to your summer jewelry with these white metal pieces.
Weekly QuizMay 21, 2026
This Week’s QuizTest your jewelry news knowledge by answering these questions.
Events & AwardsMay 22, 2026
Instore Buys JA New York ShowThe deal closed this week, which means Instore will produce the JA NY show slated to take place this fall.
FinancialsMay 22, 2026
Richemont’s Jewelry Brands Lead the Charge in Q4The company’s jewelry sales were up in Q4 and the fiscal year, with Richemont raising prices in part because of the cost of gold.
Brought to you by
How Modern Training Is Becoming a Competitive Advantage for Jewelry RetailersWith the trade and customer trust in mind, GIA® developed NextGem™ – on-demand training designed specifically for retail.
CollectionsMay 22, 2026
Leigh Maxwell Celebrates 5 Years at Couture With ‘Bauble’ CollectionThe “Bauble” capsule collection of colorful one-of-a-kinds includes our Piece of the Week, the “Bauble” earrings, featuring rose zircon.
MajorsMay 22, 2026
Stuller’s New Packaging, Display Catalog Is Out The updated catalog has a newly dedicated section for gift wrapping.
PodcastsMay 21, 2026
Episode 5: Sotheby’s Frank Everett Puts the Auction Market in PerspectiveEverett covers colored stones’ surging popularity, the mellow return of the “Mellon Blue,” and his “The Devil Wears Prada” doppelgänger.
IndependentsMay 21, 2026
Springer’s Jewelers’ New Flagship Will Serve Next-Gen Luxury ShoppersFourth-generation CEO Lilly Mullen wants to emphasize experience, connection, and personalized service.
Events & AwardsMay 21, 2026
JA Announces Nina Pugliese Memorial ScholarshipThe new award, created in partnership with Henne Jewelers, honors the late designer’s legacy through supporting jewelry education.
SourcingMay 21, 2026
Botswana, Angola Join WFDBThe addition of the diamond-producing countries as nation affiliated members broadens the federation’s global representation, WFDB said.
IndependentsMay 20, 2026
Adornment & Theory’s New Store Feels Like Home Designer Viviana Langhoff has realized her dream of owning a space for her Chicago jewelry store that looks and feels like her brand.
Events & AwardsMay 20, 2026
Here Is Couture’s 2026 Education Lineup The sessions will run from Friday, May 29, to Sunday, May 31, with one being a live taping of an episode of Couture’s podcast.
Lab-GrownMay 20, 2026
Savannah Friedkin Jewelry Names New CEOFormer Stephanie Gottlieb Fine Jewelry executive Morgan P. Richardson is joining the lab-grown diamond jewelry brand.
WatchesMay 19, 2026
Here’s the AP x Swatch Pocket Watch That Caused PandemoniumThe $400 pocket watch is a blend of Audemars Piguet’s iconic eight-sided Royal Oak and Swatch’s unserious Pop watches from the ‘80s.
CollectionsMay 19, 2026
Chris Ploof’s New Collection Makes an Ancient Metal ModernWith gold prices on the rise, the “Modern Electrum” collection uses an alternative, non-tarnishing metal alloy composed of gold and silver.
IndependentsMay 19, 2026
Ellen and Michael Fruchtman Retire, Sell Marketing Agency Fruchtman Marketing has new owners, Erin Moyer-Carballea and Manuel Carballea, and will relocate to Miami.
ColumnistsMay 19, 2026
Peter Smith: The (Mostly) Immutable Sales TruthsIn a column for the 2026 State of the Majors issue, Smith lists 10 time-tested principles about sales that still ring true.
ColumnistsMay 18, 2026
Edahn Golan: What a K-Shaped Economy Means for Fine JewelryIn a column for the 2026 State of the Majors issue, Golan spells out how the growing economic divide in the U.S. is reshaping the market.
CollectionsMay 18, 2026
Foundrae’s New Collection Taps Into JoyThe “Limitless Expansion of Joy and Hope” collection evokes summer through colored gemstones and motifs of butterflies and florals.
CollectionsMay 18, 2026
Hancocks London Acquires Historic ‘Inchiquin’ EmeraldThe jewel, circa 1890, is from the late Victorian era and was owned by descendants of the last high king of Ireland.
Events & AwardsMay 18, 2026
Here Are the 2026 JCK Industry Fund Grant Recipients This is what the nine recipients plan to do with the funds.
AuctionsMay 15, 2026
American Collector Ponies Up Almost $17K for John Wayne’s RingThe Western star’s 14-karat gold signet ring sold for six times its low estimate following a bidding war at U.K. auction house Elmwood’s.
Events & AwardsMay 15, 2026
JA, MJSA To Sponsor Roundtable at TJSThe discussion, "Rebuilding the Jewelry Workforce," will take place on Saturday, May 16, in Troy, Michigan.
