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

Stock image of a person holding holidays bags
SurveysOct 09, 2026
These Will Be the 10 Busiest Days for In-Store Shopping This Holiday Season

Stores should expect to see the most customers on Nov. 27, and Christmas week is expected to be hectic too, as Dec. 25 falls on a Friday.

Elisa Solomon x Serendipity 3 Frozen Hot Chocolate Charm
CollectionsOct 09, 2026
Elisa Solomon Collabs With Serendipity 3 on ‘Frozen Hot Chocolate’ Charm

The charm, our Piece of the Week, features brown diamond frozen hot chocolate topped with white diamond whipped cream and a ruby straw.

8 carat fancy blue diamond
AuctionsOct 09, 2026
8-Carat Blue Diamond Goes Unsold at UK Jewelry Auction

The top lot of Elmwood’s recent fine jewelry sale in London was a 1.84-carat, D color Tiffany & Co. solitaire diamond ring.

1872 x 1052 Gemolite.jpg
Brought to you by
Meet Gemology’s Next Generation Microscope: GIA® Gemolite® NXT Professional Edition

Experience gemstones with greater precision and comfort than ever before.

Ebel sport classic watch
WatchesOct 09, 2026
Movado to Sell Majority Stake in Ebel for $66.5M

The watch company agreed to sell a 95 percent interest to a group comprised of F.P. Journe, Chanel, and Swiss watch exec Pierre Jacques.

Weekly QuizOct 08, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
Stock image of paper money and coins
Policies & IssuesOct 08, 2026
Third Wave of IEEPA Tariff Refunds Begins

This round of tariff refunds is for importers that have sued over IEEPA tariffs in the Court of International Trade and won.

Brent Neale Back to Basics Collection Pink Garnet Capsule
CollectionsOct 08, 2026
Brent Neale’s New Collection Goes ‘Back to Basics’

It revisits the brand’s most requested silhouettes, from "Pillow"-set necklaces and bracelets to "Signature"-set rings and earrings.

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.

Ethical Gem Fair Brooklyn
SourcingOct 08, 2026
Ethical Gem Fair Heads Back to Brooklyn

The trade-only event includes buying opportunities as well as educational sessions on artisanal mining, the new Paraíba source, and more.

Ara Chanakian Overall Design Winner
Events & AwardsOct 08, 2026
Pattons Fine Jewelry Sweeps Local Design Contest

Ara Chanakian, a jeweler at Pattons, took home top honors in every category at Jewelers of Louisiana’s annual jewelry design competition.

Reba McEntire belt buckle
AuctionsOct 08, 2026
Reba McEntire’s Jewelry, Watches Head to Julien’s Auctions

The live charity benefit sale in Nashville will also feature gowns, boots, and other memorabilia from the country music legend.

overnght sb 1026.png
Supplier BulletinOct 08, 2026
Overnight Mountings’ Bridal Builder Helps Jewelers Turn Custom Design into a Hands-On Selling Experience

Sponsored by Overnight Mountings

The entrance to The Plumb Club pavilion at JCK Las Vegas
Policies & IssuesOct 07, 2026
The Plumb Club Amplifies Its Voice as Geopolitical Pressures Mount

The supplier organization recently joined JA and JVC to have more input on political issues affecting the jewelry industry.

Woman wearing Blue Nile Royal Asscher jewelry
CollectionsOct 07, 2026
Blue Nile, Royal Asscher Collection Highlights Natural Diamond Beauty

Blue Nile, a Signet Jewelers-owned brand, is now Royal Asscher’s exclusive licensed retailer in North America.

Audemars Piguet Risoud Eclipse Necklace
CollectionsOct 07, 2026
4 Standout Pieces in Audemars Piguet’s First High Jewelry Collection

“Royal Oak” pays homage to the brand’s most popular watch model using 18-karat gold as well as diamonds, emeralds, and sapphires.

Juan Morales and Joseph Nicosia
MajorsOct 07, 2026
Empire Safe & Vault Promotes Juan Morales to CEO

As part of the transition, Joseph Nicosia has stepped into the role of COO.

American Gem Trade Association logo
SourcingOct 07, 2026
AGTA Extends Deadline for 2026 Spectrum Awards Entries

Participants now have until Oct. 14 to complete their submissions.

The Retail Smiths Principal Partner Sherry Smith
ColumnistsOct 06, 2026
Sherry Smith: Is the Consumer Really Trading Up?

Ahead of the holidays, Smith urges jewelers to take a hard look at who’s buying jewelry, what they’re purchasing, and who’s stopped buying.

Molly Stillman @fashionveggie, Beth Jones @bjonesstyle, Helene Cortez @cortezhelene, and Haley Jordan @haleyjordan12 
SourcingOct 06, 2026
DDG Taps Influencers for ‘My Diamond Does Good’ Campaign

In the new consumer-facing campaign, four fashion and lifestyle creators share the stories behind their natural diamond pieces.

Bryan Cowan and Tom Schwartz
MajorsOct 06, 2026
Frederick Goldman Names COO, CMO

FGI President John Orrico is also leaving the company after more than 13 years.

JIS Miami fall
Events & AwardsOct 06, 2026
JIS Fall Returns to Miami

The 2026 edition will feature presentations on alternative materials and design trends, as well as pop-up activations on the show floor.

Gahcho Kue rough diamonds
SourcingOct 05, 2026
De Beers to Take Full Ownership of Gahcho Kué

It is the last fully operational diamond mine in Canada following the recent closures of Ekati and Diavik.

Tiffany gold cat pin Sandy Lerner
AuctionsOct 05, 2026
The Star Cats of the Sandy Lerner Auction

These jewels stood out at Bonhams’ sale of the cat-loving tech entrepreneur’s collection of objects depicting the feline form.

Sorellina Postscript Collection Campaign Imagery of Paper Plane Pendant
CollectionsOct 05, 2026
Sorellina Writes Another Love Letter for ‘Postscript’ Collection

The fine jewelry brand has expanded the collection that debuted at Couture with four new designs based on its most popular styles.

Bruce Bridges CIBJO
SourcingOct 05, 2026
Bruce Bridges Joins CIBJO Board

The AGTA president was elected for a two-year term on the board of directors.

Aerial image of the Lungwebungu River
SourcingOct 02, 2026
De Beers, National Geographic Society Renew Okavango Eternal Partnership

The partnership, a pledge to protect Africa’s Okavango River Basin, has been extended for an additional five years.

Pandora facility Vietnam front view
MajorsOct 02, 2026
Pandora Opens New $150M Manufacturing Facility in Vietnam

The new facility, its first outside of Thailand, will boost its manufacturing capacity by 50 percent.

×

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