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

Pandora and Foundrae medallion jewelry
MajorsApr 01, 2026
Foundrae Sues Pandora for Allegedly Copying Its Medallion Designs

Foundrae also accused the jewelry giant of copying its mood board style of marketing.

John Jacob Astor IV's Patek Philippe for Tiffany & Co., Battin & Co. pencil case
AuctionsApr 01, 2026
John Jacob Astor IV’s Titanic Pocket Watch Heads to Auction

A Patek Philippe for Tiffany & Co. timepiece owned by the American businessman who died on the Titanic will be offered at Freeman's Chicago.

Stock image of a Shell gas station
SurveysApr 01, 2026
Consumers’ Outlook Improves Again in March

The Conference Board’s Consumer Confidence Index edged up, with optimism about the present outweighing worries about the future.

GIA iD100®
Brought to you by
Protect Your Customers and Your Business

You deserve to know what you are selling–to protect your customers as well as your business and your reputation.

Zach Bear and the Window Necklace Children’s Book from Zachary’s Jewelers
IndependentsApr 01, 2026
Zachary’s Jewelers’ Constance Polamalu to Release Children’s Book

The retailer’s Zach Bear gift comes to life in “Zach Bear and the Window Necklace,” which centers on curiosity, bravery, and helping.

Weekly QuizMar 26, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Accredited Gemologists Association Logo
Events & AwardsApr 01, 2026
AGA Opens 2026 Gemological Scholarship, Research Grant Applications

Applications are open for the AGA Gemological Scholarship Program through May 15, and until June 2027 for the Gemological Research Grant.

National Jeweler columnist and Smart Age founder and CEO Emmanuel Raheb
ColumnistsMar 31, 2026
Q1 Clues That Reveal Where Your Jewelry Store’s Sales Are Heading

These customer behavior patterns say a lot about how successful your jewelry store is going to be this year, Emmanuel Raheb writes.

TopImageCrop.jpg
Brought to you by
Is This You? Every Jeweler Has This Problem; We Have the Solution.

Every jeweler faces the same challenge: helping customers protect what they love. Here’s the solution designed for today’s jewelry business.

Mejuri Puzzle Collection Campaign Imagery
CollectionsMar 31, 2026
Mejuri Adds Silver to ‘Puzzle’ Collection

Mejuri’s popular collection of 18-karat yellow gold vermeil rings debuted in sterling silver alongside new “Puzzle” slider charms.

Ashley Longshore in Buddha Mama jewelry
CollectionsMar 31, 2026
Buddha Mama, Ashley Longshore to Host Pop-Up in Dallas

The Miami-based jewelry brand and the NYC-based artist will be in Dallas from April 9-11.

Natural Diamond Council world diamond day
SourcingMar 31, 2026
NDC Designates April 8 as 'World Diamond Day'

The initiative invites those in the industry to share stories on social media highlighting the meaning and impact of natural diamonds.

Jillian Wolk, the new CEO of Tracr
SourcingMar 31, 2026
GIA VP Jillian Wolk to Take Over at Tracr

Wolk’s first day on the job as CEO of Tracr, De Beers Group’s blockchain platform, will be May 1.

Tom Moses examining the “Motswedi” diamond
EditorsMar 30, 2026
Tom Moses Looks Back on His Decades at GIA

Moses, who will leave the lab in May after nearly 50 years, discusses his start in the business, gemstones that stand out, and what’s next.

Oscar Heyman Spring Catalog Aquamarine and Diamond Necklace and Platinum Opal, Sapphire, Emerald, Diamond Bracelet
TrendsMar 30, 2026
Oscar Heyman Debuts First Spring Catalog

The new catalog, which showcases 35 one-of-a-kind pieces of jewelry, is a compliment to the company’s popular holiday catalog.

Diavik Diamond Mine winter aerial shot
SourcingMar 30, 2026
Rio Tinto Hauls Last Load from Diavik

Production has ceased at the Canadian diamond mine, which has yielded more than 150 million carats of rough diamonds in its 23-year run.

Tanishq Westborough Massachusetts store
MajorsMar 30, 2026
Tanishq Opens First New England Location

The store opening marks the 10th United States location for the India-based jewelry retailer.

Saks Fifth Avenue door sign
MajorsMar 27, 2026
Saks Global Has Changed Its Mind About Closing These 3 Stores

Two Saks Fifth Avenue locations, one in Florida and one in California, and one Neiman Marcus store are off the chopping block.

Jimmy West celebrating 40 years with Leading Jewelers Guild
IndependentsMar 27, 2026
Jimmy West, Longtime LJG Executive Director, Dies at 72

West, who started in the art department at the Leading Jewelers Guild in 1979, is remembered for his patience, kindness, and dedication.

Itä Yari Whirl Ring Tesoro
CollectionsMar 27, 2026
Itä’s ‘Yarí Whirl’ Ring Tells Every Side of the Story

In the “Tesoro” version of the ring, our Piece of the Week, each side of the gold hexagonal nugget has a unique colored gemstone design.

Citizen Watch America President Jeffrey Cohen
WatchesMar 26, 2026
Q&A: Citizen Watch America President Jeffrey Cohen on Eco-Drive’s 50th Anniversary

Cohen discusses the evolution of Citizen’s light-powered technology, the brand’s cross-generational appeal, and tariffs.

Peter Smith Essentially Human: On Sales and Salespeople
IndependentsMar 26, 2026
Peter Smith Pens Book on Human Behavior in Sales

“Essentially Human: On Sales and Salespeople" reveals the underlying human traits and behaviors of the most successful sales professionals.

Lionheart Cassandane Collection Campaign
CollectionsMar 26, 2026
Lionheart Celebrates 13 Years of ‘Cassandane’

The collection features symbols of love, luck, and light, based on the story of Queen Cassandane and Cyrus the Great of Persia.

Instappraise NAJA
Events & AwardsMar 26, 2026
NAJA, Instappraise Introduce New Scholarship

It’s the third scholarship to be launched as part of the partnership to help appraisers advance their professional credentials.

CASE Awards Graphic
Events & AwardsMar 26, 2026
JA Still Accepting Entries for 2026 CASE Awards

The deadline for entries in the jewelry design competition has been extended to April 3.

Industry journalist Rob Bates
SourcingMar 25, 2026
Rob Bates Steps Down as JCK News Director

After 28 years with JCK, the veteran industry journalist is launching his own publication on Substack called The Jewelry Wire.

AMNH Beryl
GradingMar 25, 2026
New York’s Natural History Museum, Wiley To Build Minerals Database

Wiley said the project will give scientists worldwide access to the American Museum of Natural’s History renowned mineral collection.

Boochier Flower Puff Campaign
CollectionsMar 25, 2026
Boochier Turns Flower Friendship Bracelets Into Fine Jewelry

The “Flower Puff” collection looks to beaded flower friendship bracelets from childhood, turning the silhouette into nostalgic fine jewelry.

×

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