A 43-carat sapphire brooch from the Vanderbilt collection was the top lot of the Geneva sale.
Joseph DuMouchelle Pleads Not Guilty in Wire Fraud Case
The prominent Michigan jeweler and auctioneer now faces a criminal information in the multi-million-dollar fraud case.
Detroit—A new federal charge has been filed against a prominent Michigan jeweler in a months-long fraud case involving millions of dollars.
Court papers show that last week, federal prosecutors filed a criminal information against Joseph DuMouchelle, owner of Joseph DuMouchelle Fine & Estate Jewelry Buyers, Sellers, Appraisers and Auctioneers in Birmingham, Michigan.
He has been charged with wire fraud and pleaded not guilty Monday, according to court records.
This criminal information supersedes the criminal complaint filed against DuMouchelle last fall.
The criminal information outlines the charge against the jeweler and his alleged actions similarly—though the details are pared down—but it is a charge levied by a public prosecutor without the involvement of a grand jury. (Court records show that DuMouchelle has waived his right to indictment by grand jury.)
The criminal information states between February and May of 2019, DuMouchelle “devised and executed a scheme to obtain money by means of false and fraudulent material pretenses, representations and promises.”
It states he was contacted by “T.R.,” a man identified in the criminal complaint as Thomas Ritter, who is related to the brother-in-law of DuMouchelle’s wife, in late 2018 to collect on a $430,000 debt.
Instead of paying, the jeweler offered Ritter an opportunity to allegedly make more money: buy and resell “The Yellow Rose Diamond,” a 77.12-carat, VS2 natural fancy vivid yellow diamond.
According to court papers, DuMouchelle told Ritter they could buy it for $12 million, sell it for $16 million and split the profit 70/30.
Ritter agreed but told DuMouchelle he wanted to transfer the $12 million directly to the seller of the Yellow Rose.
According to the criminal information, DuMouchelle misrepresented an industry expert who had written up a report about the stone as its seller.
He also falsified documents and emails to make it seem like the account to which Ritter was depositing the $12 million was the seller’s account when the money actually went to DuMouchelle directly, court papers state.
After Ritter sent the money, DuMouchelle allegedly sent back a fake receipt to make it seem like the stone had been purchased.
The criminal information goes on to state that immediately after the sum was added to his account, DuMouchelle withdrew most of it and used to it pay personal and business debts and expenses.
DuMouchelle’s attorney, Jonathan Epstein, did not respond to a request for comment by press time.
A wire fraud charge is punishable by up to
The Latest

Rau is a fourth-generation art and antique dealer from M.S. Rau gallery whose first jewelry collection merges artifacts with modern design.

Former De Beers sustainability leader Purvi Shah will take over the role in February 2026.

How Jewelers of America’s 20 Under 40 are leading to ensure a brighter future for the jewelry industry.
La Joux-Perret is based in La Chaux-de-Fonds, Switzerland, and makes solar quartz as well as mechanical watch movements.


She previously taught at Gem-A and is the founder of The Gem Academy.

The British actress and her daughter modeled pieces from the brand’s new “Palette” capsule for its “Once Upon a Time” holiday campaign.

Roseco’s 704-page catalog showcases new lab-grown diamonds, findings, tools & more—available in print or interactive digital editions.

Plus, the tech giant shares the steps retailers should take if they believe they’re a victim of a review extortion scam.

Danny and Gaby Shaftel are now Shaftel Diamonds’ CEO and chief operating officer, respectively.

The jewelry manufacturer’s seasonal offering features its new “Melodie” bangles, as well as mini stud earrings and layering pieces.

With more than 140 activations taking place in New York City now through Nov. 23, these 12 events are can’t-miss moments.

The Chapter 11 filing follows the resignation of CEO Moti Ferder, who stepped down after an investigation into the company’s finances.

The artwork is part of an exhibition featuring works by Kathleen Ryan, an artist known for her gemstone-studded rotting fruit sculptures.

Mark Wall, president and CEO of Canadian mining company Mountain Province Diamonds, will vacate his position next month.

Tiffany & Co. veteran Jeffrey Bennett has stepped into the role.

The showroom is located in a historic 1920s building in the Playhouse District.

The Swiss government announced the deal, which cuts the tax on Swiss imports by more than half, on social media Friday morning.

A buyer paid $4.4 million for the piece, which Napoleon wore on his hat for special occasions and left behind when he fled Waterloo.

Plus, how tariffs and the rising price of gold are affecting its watch and jewelry brands.

Furmanovich designed the box to hold Mellerio’s “Color Queen,” a high jewelry collection consisting of 10 rings.

Jennifer Hopf, who has been with JCK since 2022, will lead the execution of the long-running jewelry trade show.

Adler’s Jewelry is set to close its two stores as 82-year-old owner Coleman E. Adler II retires.

Founder Jim Tuttle shared how a dedication to craftsmanship and meaningful custom jewelry fueled the retailer’s double-digit growth.

The third-generation jeweler is remembered as a passionate creative with a love of art, traveling and sailboat racing.

A buyer paid $25.6 million for the diamond at Christie’s on Tuesday. In 2014, Sotheby’s sold the same stone for $32.6 million.

Mercedes Gleitze famously wore the watch in her 1927 swim across the English Channel, a pivotal credibility moment for the watchmaker.





















