Crime

LA Jewelry District Couple Pleads Guilty to Hiding Millions from IRS

CrimeDec 24, 2025

LA Jewelry District Couple Pleads Guilty to Hiding Millions from IRS

The couple pleaded guilty to concealing at least $127 million in cash transactions at its precious metals businesses.

Stock image of gavel
Alex and Sam Nguyen, a California couple that owned precious metals businesses in the downtown Los Angeles Jewelry District, have pleaded guilty to conspiracy after allegedly hiding more than $100 million in cash transactions from the IRS.
Los Angeles—A husband-and-wife duo that owned precious metals businesses in the downtown Los Angeles Jewelry District have pleaded guilty to federal criminal charges for allegedly concealing more than $100 million dollars in cash transactions from the United States government.

The couple also failed to maintain an anti-money laundering program and used the unreported cash at other family businesses, at a casino, and for other personal expenses, according to a press release from the U.S. Attorney's Office, Central District of California.

Alex Nguyen, 50, and Sam Nguyen, 52, both residents of Irvine, California, and one of their companies, Newport Gold Post Inc., pleaded guilty to one count of conspiracy.

Alex also pleaded guilty to one count of filing a false tax return. 

The attorney for Newport Gold Post did not respond to a request for comment.

From May 2013 to March 2022, the couple owned several family businesses that bought and sold precious metals, including Newport Gold Post, Goldtech Assay Laboratory LLC (doing business as Infinity), Sam Bullion and Coin, and AAPS Bullion, as per their plea agreements.

The businesses allegedly received millions of dollars in cash from their customers. 

The Bank Secrecy Act requires business owners to file a Form 8300 with the Internal Revenue Service (IRS) to report cash transactions exceeding over $10,000. The couple repeatedly failed to do that, said the release.

As an example, during a February 2020 transaction, a buyer asked for a receipt after buying 643 ounces of silver for approximately $11,766. Alex was said to have responded “not for cash” and did not ask the buyer for any identification.

Throughout the year, this buyer made several silver purchases, according to officials. 

In December 2020, the buyer showed up with a suitcase containing $140,000 in cash. Half of the cash bundles were wrapped in heat-sealed packages.

Alex took the cash and gave the buyer 5,118 ounces of silver. Over a total of four transactions, Alex never filed a Form 8300 with the IRS, said officials.

While operating these businesses, Alex received $200,000 to $1 million in cash per day, said the statement.

With this cash, he purchased precious metals from other businesses in the LA Jewelry District, with an agreement that a Form 8300s would not be filed, as per the release.

Alex and his co-conspirators failed to file Form 8300s on more than 350 occasions, said officials, failing to account for at least $127.4 million in cash that went to Nguyen family businesses.

 Related stories will be right here … 

In her plea agreement, Sam admitted to intentionally not filing the form for multiple cash transactions.

Officials noted a July 2021 incident when a buyer purchased 50 one-ounce gold bars at Newport Gold for $100,000 in cash, which was wrapped in heat-sealed, shrink wrapping.

Sam told the buyer she preferred when the cash was wrapped up this way, said officials, because she would sometimes receive cash that had been buried underground.

She did not ask the customer about the source of the wrapped cash, did not ask for identification, and did not file a Form 8300, according to the release.

IRS auditors had advised the couple several times to set up an anti-money laundering program, as required by federal law, but they did not.

The couple admitted to lying to federal officials including IRS auditors and the FBI, with both defendants having falsely stated they did not accept cash payments.

From 2016 through 2020, Alex filed inaccurate joint tax returns where he did not report income from the Nguyen family businesses, said the statement.

The couple also took cash from their businesses to a casino, where they received checks totaling more than $1 million, which were deposited into their bank accounts for personal use, said officials.

The total amount in taxes due for all five years may be as high as $1.9 million, as per court documents.

United States District Judge Michelle Williams Court has scheduled a sentencing hearing for June 5.

Alex faces up to eight years in federal prison while Sam will face up to five years. Newport Gold Post will face a statutory maximum sentence of five years of probation and a $500,000 fine.

IRS Criminal Investigation and the FBI are investigating the incidents. 

The Latest

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.

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.

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.

Weekly QuizJul 17, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
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.

Main camp at Ekati Diamond Mine
SourcingJul 16, 2026
Ekati to Close, Leaving Canada With One Diamond Mine

The diamond mine, which opened nearly 30 years ago in Canada’s Northwest Territories, is expected to shut down by mid-August.

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.

Necklace from Vhernier’s “Freccia” high jewelry collection
FinancialsJul 16, 2026
Richemont’s Jewelry Sales Soar for the Seventh Quarter in a Row

Jewelry sales for the company, which owns Cartier, Van Cleef & Arpels, Vhernier, and Buccellati, rose 21 percent in the first quarter.

Grace Barden
Events & AwardsJul 16, 2026
MJSA Mentor & Apprenticeship Program Certifies First Advanced Apprentice Graduate

The graduate, Grace Barden, credited the program with helping her secure a job as a bench jeweler.

Jewelers of Louisiana 80th Annual Convention Logo
Events & AwardsJul 16, 2026
Jewelers of Louisiana to Host 80th Convention

The event, scheduled for next month in New Orleans, will include dinner, a custom jewelry design contest, and education sessions.

Lucara diamond
SourcingJul 15, 2026
1,305-Carat Diamond Recovered from Mine in Botswana

The yet-to-be named stone is the 10th diamond weighing more than 1,000 carats to come out of Lucara’s Karowe mine.

Barry Berman
IndependentsJul 15, 2026
New Jersey Jeweler Barry Berman Dies at 81

The founder of Fords Jewelers, Berman is remembered for his love of connecting with his community.

Watches of Switzerland Mall of America store
FinancialsJul 15, 2026
Watches of Switzerland’s US Sales Jump 18%, Declines to Comment on Sale Report

The watch and jewelry retailer had a strong fiscal year despite what its CEO described as a “complex operating backdrop.”

Hamptons Jewelry Show exhibitors Maison Mèrenor, Jochen Leën, Studio Javo
Events & AwardsJul 15, 2026
Hamptons Jewelry Show to Return in July

The open-to-the-public luxury jewelry and timepiece show, in its second year, is slated for July 23-26.

Pomellato Eye of Tanzanite Necklace and Pin-Up Ring
CollectionsJul 15, 2026
Pomellato’s New High Jewelry Is Liberating

Bold color, expressive gem-setting, and sculptural form define the three chapters that make up “Stile Libero.”

Foundrae London Store Showcases
IndependentsJul 14, 2026
Foundrae Opens First Standalone Store Outside US

The New York-based jewelry brand has expanded overseas, opening a store in London’s Mayfair district.

The Retail Smiths Principal Partner and National Jeweler columnist Sherry Smith
ColumnistsJul 14, 2026
Sherry Smith: What Today’s Jewelry Consumer Is Telling Us

Rising revenue does not automatically mean a healthy business, particularly in the current economic landscape, Smith writes.

Mindi Mond New York emerald shoulder duster earrings
TrendsJul 14, 2026
Amanda’s Style File: Shoulder Dusters

These long, fluid drop earrings are sure to catch the eye.

Aerial view of Amazon
Events & AwardsJul 14, 2026
Conference on Mining, Sustainability Kicks Off in NYC

Initiatives in Art and Culture is hosting its 16th annual Gold and Diamond Conference, with the theme of “Resilience.”

Stephanie Gottlieb Casual Carats Lab-Grown Dimond and Silicone Rings
Lab-GrownJul 13, 2026
Stephanie Gottlieb Changes Her Mind on Lab-Grown Diamonds

The designer, who once said she’d never sell lab-grown diamonds, debuted two capsule collections designed to be fun and easy to wear.

File photo of the Venetia Diamond Mine in South Africa
SourcingJul 13, 2026
De Beers Announces Potential Layoffs, 2-Year Production Pause at Venetia

The diamond miner and marketer is undergoing another round of cost-cutting measures ahead of its sale by Anglo American.

JIS sign in convention center lobby
Events & AwardsJul 13, 2026
Registration Opens for JIS Fall 2026 Show

The annual trade-only buying event is slated for Oct. 16-19 in Miami Beach, Florida.

“Elements” bracelet best of show AGTA Spectrum 2025
Events & AwardsJul 13, 2026
AGTA Accepting Entries for Spectrum 2026

AGTA also has announced the lineup of judges for the colored gemstone cutting and jewelry design contest’s various categories.

Arena Club Twilight and Eclipse Time Boxes
TechnologyJul 10, 2026
There’s a New Blind Box for Luxury Watches

Collectibles platform Arena Club’s new Time Boxes could contain a Rolex or Patek Philippe watch.

Jade Trau Constellation Plié Collar
TrendsJul 10, 2026
Jade Trau Creates a Constellation of Diamonds

The “Constellation Plié” collar, our Piece of the Week, features diamonds arranged in a constellation of shining stars.

Former De Beers CFO of Brands and Consumer Markets Shaun Wills
SourcingJul 10, 2026
CFO of De Beers’ Consumer-Facing Division Leaves Company

Shaun Wills joined the company in 2024 and was chief financial officer of the De Beers Brands and Consumer Markets division.

×

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