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

Blue Nile Ellipse earrings
FinancialsSep 09, 2026
Signet Jewelers to ‘Double Down’ on Blue Nile Amid Strong Sales

The jewelry retailer said it sees opportunity at higher price points, particularly in natural diamonds for bridal and fashion.

Sarah Leonard Fine Jewelers family
IndependentsSep 09, 2026
Sarah Leonard Fine Jewelers Closes After Nearly 80 Years

The Los Angeles-based, family-owned jeweler was founded by Lenny and Sunny Friedman in 1946.

Fura rubies
SourcingSep 09, 2026
Fura Gems Notes ‘Remarkable’ Interest in Larger Rubies at Latest Sale

The auction, held in Bangkok, was 96 percent sold by lot, with nearly 411,000 carats of Mozambiquan rubies sold.

Cover.jpg
Brought to you by
Your Piece Could Be the One Editors Talk About

Submit your pieces for a chance to win in this year's competition.

Stuller Fine Jewelry 2027-2028 catalog
MajorsSep 09, 2026
Stuller’s Latest Catalog Includes Its New Demi-Fine Collection

Fine Jewelry 2027-2028 has more than 900 new styles, including silver, gold-filled, gold-plated sterling silver, and vermeil jewelry.

Weekly QuizSep 03, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
2018_Stuller-lab-grown.jpg
Policies & IssuesSep 09, 2026
8 Key Changes the FTC Made to the Jewelry Guides: A Refresher

Learn more about the new terms for lab-grown diamonds and composite gemstones, and the major changes in store for precious metals jewelry.

Frederick (Ricky) Wilkinson Bromberg
IndependentsSep 08, 2026
Ricky Bromberg, Longtime President of Bromberg & Co., Dies at 67

Bromberg is remembered as a Southern gentleman who always wore a suit and tie and treated others with kindness.

1872-x-1052-July-ad (1).png
Brought to you by
Why More Jewelry Retailers Are Hosting Turnkey Estate Buying Events

Retailers are seeking new ways to attract customers, increase traffic, and create revenue – Estate buying events are a popular solution.

Zahn Z Zaha rainbow sapphire ring
TrendsSep 08, 2026
Amanda’s Style File: A Hot Take on September’s Birthstone

With high durability and a wide range of colors to choose from, sapphires may be the ultimate birthstone, Gizzi claims.

The Retail Smiths principal and National Jeweler columnist Peter Smith
ColumnistsSep 08, 2026
Peter Smith: Humor Is No Laughing Matter

Laughter is often considered a distraction in the workplace, but it has benefits for both staff and management, Peter Smith writes.

Gretchen Koback Pursel
MajorsSep 08, 2026
Former Tiffany & Co. Exec Joins Exemplar Luxury Group

Gretchen Koback Pursel is the new chief people officer at the company formerly known as Saks Global.

Rendering of renovated Orloff Jewelers store
IndependentsSep 04, 2026
Orloff Jewelers Will Soon Unveil a Bigger, Better Location

The California jeweler is renovating its store in Fresno, with plans to show off the new space in December.

Chelsea Gabrielle Momentum Infinite Ring
CollectionsSep 04, 2026
Chelsea Gabrielle Transforms Pilates Reformer Springs Into Ring

A lifelong practitioner of Pilates, Gabrielle looked to the springs’ tension and suspension when creating this ring, our Piece of the Week.

JCK Industry Fund logo
Events & AwardsSep 04, 2026
JCK Industry Fund Accepting 2027 Applications

The deadline to apply is Nov. 13.

Remi Guillemin
AuctionsSep 04, 2026
Christie's Names New Global Head of Watches

The auction house has promoted Remi Guillemin, formerly its head of watches for the Americas and EMEA, to the role.

Simon G CEO Zaven Ghanimian
EditorsSep 03, 2026
Q&A: Simon G.’s CEO on Why He Won’t Use AI for Jewelry Design

Zaven Ghanimian discussed the value of human craftsmanship and where the implementation of artificial intelligence does work.

Jewelers of America logo
Events & AwardsSep 03, 2026
Here Are the First Recipients of Nina Pugliese Memorial Scholarship

Jewelers of America also revealed the recipients of the Seymour & Evelyn Holtzman Bench Scholarship and its own scholarship programs.

Robert Pattinson Jaeger-LeCoultre
WatchesSep 03, 2026
Robert Pattinson Joins Jaeger-LeCoultre as Brand Ambassador

The British actor, known for his roles in “Twilight” and “The Odyssey,” will star in a campaign for the Master Control Chronometre.

Sydney Evan Little Love Open Coin Fixed Necklace
CollectionsSep 03, 2026
Sydney Evan Celebrates 25 Years With 4 New Collections

The “Confetti Disco,” “Champagne Cheers,” “Tuxedo,” and “Classic Punk” jewelry collections each capture a distinct spirit of celebration.

Sandy Lerner’s 18-karat gold and diamond cat brooch
AuctionsSep 02, 2026
If You Love Cats, This Jewelry Auction Is for You

Cat ladies of the jewelry world, unite. Sandy Lerner’s “significant” collection of cat jewelry and other objects is going up for auction.

Arnaud Michon
MajorsSep 02, 2026
Messika Names Former Omega Exec as New President, CEO of Americas

Arnaud Michon, the former Omega USA President, will now lead Messika’s Americas region during its international development.

Glitter in the Grove Logo
Events & AwardsSep 02, 2026
Emerald’s New Owner Introduces ‘Glitter in the Grove’

The branding references the back-to-back jewelry shows that new parent company Forge will host in Miami's Coconut Grove this November.

Stainless steel Patek Philippe Calatrava watch
AuctionsSep 01, 2026
UK Woman Uncovers Rare Patek Philippe Watch in Mom’s Jewelry Box

The stainless steel Patek Philippe “Calatrava” watch from the 1930s sold for nearly $80,000 at a recent Hansons Cornwall auction.

Smart Age Solutions founder and CEO Emmanuel Raheb
ColumnistsSep 01, 2026
Your Jewelry Marketing Has a Bridal Problem

Engagement rings are important but don’t ignore the customers who are buying jewelry “just because,” Emmanuel Raheb writes.

Charlotte Fournet and Krizia Cucurachi
MajorsSep 01, 2026
Kering Names New Pomellato, DoDo CEOs

Former Pomellato CEO Sabina Belli has been named president of Kering Italia amid a shakeup of Kering's new Jewelry division.

Anne Marie Shulman
MajorsSep 01, 2026
Anne Marie Shulman Joins GPA Global

The veteran luxury packaging executive was appointed to help the company grow its North American business.

Ethiopian paraiba tourmaline
GradingAug 31, 2026
GIA, Gübelin Gem Lab Confirm New Paraíba Tourmaline Deposit in Ethiopia

The labs’ separate investigations each determined that the East African country is producing copper-bearing tourmaline.

×

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