Metro Detroit Jeweler Who Once Auctioned a Trump Ring Pleads Guilty in Scam

September 14, 2020, 4:27 PM

Joseph DuMouchelle

Birmingham jeweler Joseph DuMouchelle pleaded guilty Monday to orchestrating a $12-million scam involving "The Yellow Rose," a rare 77-carat diamond.

Joseph DuMouchelle, 58, owner of DuMouchelle Fine & Estate Jewelers in Birmingham, admitted tricking North Dakota investor Thomas Ritter into wiring $12 million to invest in the Yellow Rose diamond last year, the U.S. Attorney's Office said in a press release.

The two planned to sell it and divide the profits. Instead, DuMouchelle never bought the diamond and stole the money. 

The scheme began in late 2018. DuMouchelle convinced Ritter to put up the $12 million to buy the diamond from a Texas estate. 

Ritter thought he was wiring the money to the person who was selling the diamond, when in fact it was going into DuMouchelle's accounts. DuMouchelle quickly withdrew the funds and used them to pay his personal and business debts and expenses, authorities said.

As part of his plea, DuMouchelle acknowledged there were other victims he defrauded. Their losses will be calculated in his sentencing guidelines and restitution, the U.S. Attorney's Office said.

“Joseph DuMouchelle defrauded his investors by convincing them that he was buying and selling rare jewelry for big profits,” said Steven M. D’Antuono, head of the Detroit FBI, in a statement. “It was all a lie. Instead, DuMouchelle used the victims’ hard-earned money to help him maintain a lifestyle he could no longer afford."

DuMouchelle is the son of the llate auctioneer-appraiser Lawrence DuMouchelle, owner of the DuMouchelle Art Galleries in Detroit.

In 2016, Joseph DuMouchelle auctioned an engagement ring that Donald Trump gave ex-wife Marla Maples. It sold for $300,000. 

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