Crime

Michigan Jeweler, Auctioneer Charged with Wire Fraud

CrimeNov 18, 2019

Michigan Jeweler, Auctioneer Charged with Wire Fraud

Federal investigators allege Detroit-area jeweler Joseph DuMouchelle faked the purchase and sale of a $16.5 million diamond.

Detroit—A prominent Detroit-area jewelry buyer and auctioneer has been charged with wire fraud involving millions of dollars.

A criminal complaint was filed Nov. 8 in the U.S. District Court for the Eastern District of Michigan against Joseph DuMouchelle, the 58-year-old owner of Joseph DuMouchelle Fine & Estate Jewelry Buyers, Sellers, Appraisers and Auctioneers in Birmingham, Michigan.

DuMouchelle is a fourth-generation member of the jewelry industry, according to his website, studying at GIA before working for the family business for a decade and then branching out on his own.

The criminal complaint outlines two situations involving the sale of high-priced items in which DuMouchelle was involved.

The first involves business with a distant family member.

According to court documents, DuMouchelle started doing business with Thomas Ritter, who is related to the brother-in-law of DuMouchelle’s wife, Melinda Adducci.

Ritter would give DuMouchelle money to purchase pieces of jewelry, and they would split the profits once the piece was sold.

The complaint states that by December 2018, the latter owed Ritter about $430,000.

In January, Ritter contacted DuMouchelle to collect but instead of paying, the jeweler presented him with an opportunity to make more money: buy and resell “The Yellow Rose Diamond,” a 77.12-carat, VS2 natural fancy vivid yellow diamond.

According to the complaint, DuMochelle told Ritter they could buy the stone for $12 million and sell it for $16 million.

Ritter agreed; he was to receive 75 percent of the profit, while DuMouchelle would get the remaining 25 percent. Ritter also indicated he wanted to wire transfer the $12 million directly to the seller of the Yellow Rose.

DuMouchelle approached Richard Drucker of Gemworld International to prepare a report on The Yellow Rose Diamond, which Drucker did.

What Drucker didn’t know, however, is that DuMouchelle was characterizing him to Ritter as a representative of the diamond’s seller.

According to court documents, DuMouchelle forwarded two different emails to Ritter that looked like they came from Drucker and contained wire instructions to bank accounts later discovered to belong to DuMouchelle and his wife.

An FBI investigator found by using the IP address that the emails had originated from the Detroit area and not Glenview, Illinois, where Drucker is based.

Court documents acknowledge that Drucker did not have any involvement in a transaction involving the yellow diamond, nor did he know who the buyer and seller were.

Drucker told investigators that he doesn’t normally do reports on

individual stones but agreed to put together something on the Yellow Rose Diamond and email it to DuMouchelle as a favor, as the two have known each other for decades.

In a statement to National Jeweler, he said: “I am aware of the complaint filed against Joseph DuMouchelle. The report I prepared at Mr. DuMouchelle’s request contained general information. It clearly stated I do not buy or sell jewelry and disclosed that I had not personally examined this stone. That was the full extent of my involvement in this matter.

“I was later informed that an email for wire information purportedly came from me. I did not send any emails regarding this transaction, I had no knowledge of the buyer or seller, and I was never a party to the transaction in any way.”

The investigation then led to William Noble Rare Jewels in Texas, which had consigned pieces to DuMouchelle and was also owed money.

By the end of 2018, DuMouchelle possessed approximately $12.5 million of Noble’s items, court documents show. In February 2019, another Detroit-area jeweler contacted William Noble to tell him his merchandise was being sold for 20 cents on the dollar.

DuMouchelle denied it and told Noble he had a customer interested in buying The Yellow Rose diamond.

He told Noble the buyer “would not allow him to take a profit” so he offered a $12 million price and asked Noble if he’d take $10 million for the sale and wire $2 million back to him.

Noble purportedly felt this wasn’t right and possibly illegal, court documents state, so he declined.

He told investigators he never sent the diamond, nor did he agree to sell it to DuMouchelle.

But that didn’t stop DuMouchelle.

In April, he allegedly sent Ritter an email with a copy of a contract for the purchase and sale of the Yellow Rose diamond for $16.5 million.

According to court documents, DuMouchelle told Ritter at the time that three wire transfers had been made by the purchaser in the amounts of $2 million, $4 million and $10.5 million, but no deposits or wire transfers of such amounts had been made, the investigation showed, as DuMouchelle had never actually bought or sold the diamond.

Also in February, court documents state Noble got six pieces he had consigned to DuMouchelle back, as well as a wire transfer of about $4.25 million for three pieces the latter said he’d sold for Noble.

But the investigation showed DuMochelle used proceeds from the $12 million Ritter had sent for the purchase of the yellow diamond—which Ritter thought was going to the diamond’s owner but actually went to the account belonging to DuMochelle and his wife—to pay Noble back.

According to court documents, Noble has made numerous attempts since February to reach DuMouchelle. Noble could not be reached for comment on the case by press time.

The second situation involves allegations of wrongdoing involving Jonathan Birnbach of JB International LLC in New York, who had bought and sold jewelry to DuMouchelle for years.

In late 2018, the two entered into a consignment agreement in which they would buy jewelry from estates and sell it for a profit at auction.

DuMouchelle told Birnbach 95 percent of the items sold at auction, but Birnbach indicated to the government he never received any proceeds.

To date, he has received only $500,000 of the approximately $2.5 to $3 million he is owed, the complaint states.

DuMouchelle did not respond to a request for comment by press time. An attorney has not yet been listed for the jeweler.

According to court documents, he is scheduled to appear in court on Dec. 5.
Brecken Branstratoris the senior editor, gemstones at National Jeweler, covering sourcing, pricing and other developments in the colored stone sector.

The Latest

Stock image of shipping containers in port
Policies & IssuesJul 24, 2026
New Trump Tariffs: What They Mean for Jewelry

The new sweeping slate of tariffs impacts 60 countries, including India, China, Thailand, Hong Kong, and the United Arab Emirates.

Jorge Adeler Gods & Heroes coin pendant
TrendsJul 24, 2026
Amanda’s Style File: Ode to ‘The Odyssey’

From coin pendants to diamond shields, these old world-inspired jewels are the perfect accessory for an epic journey.

Courtney Leidy Amethyst Silk Cord Pendant
TrendsJul 24, 2026
Courtney Leidy’s Silk Cord Pendants Center Unexpected Pairings

Our Piece of the Week pairs a checkerboard-cut amethyst with an ivy green silk cord.

Brought-To-By-Article-Top-Image.jpg
Brought to you by
Wedding Band Trends 2026: Personalization Takes Center Stage

Colored gemstones, artisan finishes, mixed metals, and meaningful details are shaping demand in bridal jewelry.

NJ Article image.png
PodcastsJul 23, 2026
Episode 7: Reinhold Jewelers on the Power of Relationships

Mildred Marcano Abrams and Yael Reinhold join the podcast to talk community connections, holiday plans, and preserving Reinhold’s legacy.

Weekly QuizJul 23, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Trucks at De Beers’ Orapa mine in Botswana
SourcingJul 23, 2026
De Beers’ Production Jumps 88 Percent in Q2

Production also was up in the first half of 2026 but is expected to “substantially” decrease in H2 as two key mines undergo maintenance.

Silvia Furmanovich Enchapado en Tamo Wooden Wheat Straw Sun Earrings
CollectionsJul 23, 2026
Silvia Furmanovich’s New Collection Travels Back to the 1920s

“Art Deco” fuses ancestral techniques, rare materials, and modern perspectives as a tribute to the optimism and curiosity of the movement.

DCA-NJ-article-1872x1052-060826.jpg
Brought to you by
Building the Future of Jewelry Retail: DCA Expands Education, Leadership Development, and Workforce Solutions

DCA is preparing the next generation of professionals by supporting workforce development, leadership growth, and career advancement.

Sissy’s Log Cabin Saracen Casino
IndependentsJul 23, 2026
Sissy's Log Cabin Opens Casino Store

The jeweler’s newest store is inside Arkansas’ Saracen Casino Resort.

Kate Spade New York watches
WatchesJul 23, 2026
Movado Inks Licensing Deal With Kate Spade New York

The watch company will design, manufacture, and distribute Kate Spade New York watches.

Stock photo of loose polished diamonds
Policies & IssuesJul 22, 2026
Trump to Put 50% Tariff on Canadian Goods

The higher tax is set to go into effect in August and will apply to loose polished diamonds as well as precious and base metals jewelry.

Monica Rich Kosann Enchanted Garden Cherry Necklace
CollectionsJul 22, 2026
Monica Rich Kosann’s High Jewelry Is Fruitful

The “Enchanted Garden” series features a cherry, lemon, and pear that each hold a little secret inside.

Liljenquist new Rolex boutique McLean Virginia
IndependentsJul 22, 2026
Liljenquist Beckstead Opens Rolex New Boutique

It’s located in Tysons Galleria, an upscale shopping center in the Washington, D.C., metro area.

NY Now exhibitor booth
Events & AwardsJul 22, 2026
NY Now Returns in August Under New Ownership

The show, recently acquired by Rockview Management Group, will be held at New York City’s Javits Center from Aug. 2-4.

The Retail Smith Principal Partner and National Jeweler columnist Sherry Smith
ColumnistsJul 21, 2026
Sherry Smith: Shattering the Illusion of the ‘Either/Or’ Diamond Market

Smith offers retailers guidance on creating an environment where natural and lab-grown diamonds can both thrive.

Emerald logo
Events & AwardsJul 21, 2026
Apollo Funds Completes Emerald Acquisition

Former Emerald President and CEO Hervé Sedky has transitioned to the role of senior advisor.

Graff Seraphina Brooch and Lina Pendant
CollectionsJul 21, 2026
Graff’s New Butterfly High Jewelry Brooches Metamorphosize

The 12-piece capsule collection transforms from brooches to pendants.

Rough diamonds from De Beers’ Gahcho Kue mine in Canada
SourcingJul 21, 2026
Anglo Reportedly Selects Gareth Penny’s Consortium as Top Bidder for De Beers

A Botswana government official told lawmakers Anglo has selected The Global Diamond Consortium, an entity chaired by Penny, to buy De Beers.

Stock image of shipping containers
Policies & IssuesJul 20, 2026
Tariffs on Brazil to Increase But Rough Gemstones Exempt

The new tariff, imposed after a Trump administration study, is 25 percent and will stack on top of existing tariffs.

Vhernier Freccia High Jewelry Necklace
CollectionsJul 20, 2026
Vhernier Transforms ‘Freccia’ Collection Into High Jewelry

The collection from 2014 has been reinterpreted into high jewelry with its signature triangular-shaped elements.

Krista Collins Walters
MajorsJul 20, 2026
Krista Collins Walters Promoted to Publisher of Instore

She will also take on the role of vice president of jewelry for SmartWork Media, a newly created position.

Attendees at the Jewelry Symposium
Events & AwardsJul 20, 2026
TJS Accepting Speaker Proposals for 2027 Event

Organizers are looking for presentations on topics like manufacturing, technology and research, bench work, gemstones, and sustainability.

HOWL Frida Venetian Glass Collar
CollectionsJul 17, 2026
HOWL Taps Shailene Woodley for ‘Home Sweet Home’ Campaign

Woodley is seen in the campaign wearing our Piece of the Week, the “Frida” collar featuring 13 pieces of hand-carved Venetian glass.

A diamond ring in a jewelry box
SourcingJul 17, 2026
U.K. Woman Pays £5 for £15K Diamond Ring at Car Boot Sale

A WeBuyVintage jewelry expert uncovered how much the flea market find was actually worth.

Unveiling Rarities
SourcingJul 17, 2026
Diamond Dealer Jeff Pancis Pens Memoir

The founder of natural colored diamond wholesaler Pancis Gems shares stories from his five decades in the industry.

Gem Awards 2027 Logo
Events & AwardsJul 17, 2026
Gem Awards Opens 2027 Nomination Period

Submissions for the milestone 25th annual Gem Awards will be accepted across three categories from now through July 31.

Guzema Founder and Creative Director Valeriya Guzema and Co-Owner and CEO Mariana Lenha
EditorsJul 16, 2026
Q&A: Guzema’s Co-Owners On Its US Expansion, 10-Year Anniversary

Valeriya Guzema and Mariana Lenha look back on the last decade and discuss the Ukrainian brand’s first U.S. store.

×

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