Crime

SEC Pulls the Plug on Diamond-Related Cryptocurrency Scam

CrimeMay 23, 2019

SEC Pulls the Plug on Diamond-Related Cryptocurrency Scam

A Florida cryptocurrency company allegedly took more than $30 million from investors, promising big returns by reselling fancy colored diamonds.

20190522_PinkDiamond.jpg
There is money to be made investing in natural fancy colored diamonds, like this 13.33-carat rough pink diamond Gem Diamonds sold for nearly $9 million in March. But the SEC says one Florida cryptocurrency company cheated consumers out of millions by claiming big returns by reselling fancy colored diamonds that it did not actually have.

Washington, D.C.—The U.S. Securities and Exchange Commission has put the brakes on an alleged diamond-related cryptocurrency scam, the regulator announced Tuesday.

The U.S. District Court for the Southern District of Florida granted the SEC’s request for an emergency court order halting an alleged Ponzi scheme that took in than $30 million from over 300 investors in the United States and Canada, promising big returns by reselling diamonds.

According to the SEC complaint, Jose Angel Aman of Argyle Coin, a Florida-based cryptocurrency company, and his partners, Harold Seigel and Jonathan H. Seigel (who are father and son), told investors that investing in their cryptocurrency company was risk-free because it was backed by fancy colored diamonds.

Aman’s LinkedIn profile states that he has worked in the fancy colored diamond industry for more than 25 years and attended the American Institute of Diamond Cutting.

Aman is also allegedly the owner of Diamante Atelier, a jewelry store on Worth Street, an exclusive block in Palm Beach, Florida featuring high-end stores like Gucci and Hublot.

A storefront for Diamante Atelier, which shares an address with Argyle Coin, is not visible on Google Maps. The website for the store is disabled and a call placed Tuesday did not go through.

The SEC claims that instead of using investor funds to develop the business, Aman and Jonathan H. Siegel misappropriated more than $10 million. Aman, the complaint alleges, used some of the money for personal expenses, including rent on his home and horseback-riding lessons for his son.

The remainder of the investor funds were used to pay “purported returns” to investors in Aman’s other companies, which allegedly were operating similar schemes.

Argyle Coin is just one piece of the puzzle, according to the complaint, which states that Aman and Seigel were involved in “operating a multi-layer Ponzi scheme,” offering unregistered securities through two other companies.

From May 2014 through December 2018, Aman operated Natural Diamonds Investment Co., in which Jonathan H. and Harold, who is host of a weekly Canadian radio show called “The World Financial Report,” had an interest.

Similar to the Argyle Coin pitch, the companies told investors that it would invest in rough fancy colored diamonds, cut and polish them and then sell them for a profit, according to the complaint.

Investors were told the initial return would be 24 percent and full return of the principal would be realized within two years, according to court documents.

When funds were running low

in 2015, Aman and the Seigels launched a similar second unregistered security offering in another company, Eagle Financial Diamond Group Inc.

A search of Florida state’s Division of Corporation website also shows “Jose A Aman” as the officer of Falcon Financial Diamond Group Inc., Fancy Diamonds Private Investments LLC, H. Seigel Fine Auctions Inc., and Natural Diamonds Investment Co., though these were not listed in the SEC complaint.

“As alleged, Aman operated a complicated web of fraudulent companies in an effort to continually loot retail investors and perpetuate the Ponzi schemes as well as divert money to himself,” Eric I. Bustillo, director of the SEC’s Miami Regional Office, said in a statement.

Argyle Coin did not have diamonds to back up investors’ money, according to court documents. Aman allegedly pawned dozens of diamonds and pocketed proceeds of more than $750,000.

Natural Diamonds, Eagle, Argyle Coin, Aman and the Seigels have been charged with violations of the securities registration provisions.

Aman and his companies are facing an additional charge of violating the anti-fraud provisions of the federal securities laws.

The SEC is seeking to levy financial penalties as well as repayment of “ill-gotten gains and prejudgment interest”.

The accounts of Natural Diamonds, Eagle and Argyle Coin had a combined negative balance of about $120,000 as of March 31, as per court documents.
The SEC has been cracking down on fraudulent cryptocurrency companies, looking to protect consumers as the process of codifying regulations drags on.

“As with any other type of potential investment, if a promoter guarantees returns, if an opportunity sounds too good to be true, or if you are pressured to act quickly, please exercise extreme caution and be aware of the risk that your investment may be lost,” cautioned SEC Chairman Jay Clayton in the regulator’s formal statement on cryptocurrency.

The SEC isn’t the first to accuse to Aman and his associates of fraud.

A case was filed in the Palm Beach County Circuit Court earlier this month by investors Don and Ann Geddes.

Harold Seigel advised the couple to invest $200,000 in a 50-carat parcel of pink rough diamonds said to be owned by Eagle Financial, estimated to be worth $8.5 million, according to court documents.

The Geddes were allegedly told that their investment was guaranteed by International Insurance NV, an off-shore company based in Curacao.

When it was time for the Geddes to get their money, Seigel reportedly convinced them to invest their return into Argyle Coin.

“Harold Seigel and Argyle Coin represented that the Geddes would receive ‘argyle coins’ with a value of $10 per coin when they knew that the argyle coins had zero value and/or did not exist,” court documents state.

There are a number of similar lawsuits filed in Palm Beach County Circuit Court, including a suit filed by the Rounds, longtime listeners of Seigel’s show who once trusted his counsel but are now suing for the return of about $2 million, the Palm Beach Daily News reports.

In a statement emailed to National Jeweler, attorney Kevin O’Reilly, who is representing Aman and the Seigels, said: “Jose Aman, Natural and Eagle have been cooperating with the corporate monitor appointed in the Rounds case. Further, they intend to fully cooperate with the SEC to get this matter resolved amicably.”

The Florida Office of Financial Regulation will be assisting the SEC with this case, spokesperson Jamie Mongiovi said.
Lenore Fedowis the senior editor, news at National Jeweler, covering the retail beat and the business side of jewelry.

The Latest

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 “The Batman” 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.

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.

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.

Weekly QuizAug 27, 2026
This Week’s Quiz
Test your jewelry news knowledge by answering these questions.
Take the Quiz
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.

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.

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.

Levinger & Bissenger silver floral pendant
Events & AwardsAug 31, 2026
Wisconsin Museum to Host Jewelry Exhibition

“Chicago Collects: Jewelry in Perspective” at the Oshkosh Public Museum will feature works by Fabergé, Lalique, and Louis Comfort Tiffany.

Catbird First Men’s Collection Worn Well
CollectionsAug 31, 2026
Catbird Launches First Men’s Jewelry Collection

The “Worn Well” collection is Catbird's take on classic men's jewelry.

Buddha Mama Butterfly Necklace
CollectionsAug 28, 2026
Dolly Parton Would Have Loved This Butterfly Necklace

This Buddha Mama butterfly is our Piece of the Week honoring the legend, who embraced the beautiful insect as her symbol.

Gareth Penny
SourcingAug 28, 2026
Gareth Penny to Give Opening Speech at CIBJO Centenary Congress

The former De Beers CEO, and perhaps its next owner, will be a featured speaker at the event, slated for Sept. 4-7 in Italy.

Day’s Jewelers store in Salem New Hampshire
IndependentsAug 28, 2026
Day’s Jewelers Honored With 3 Workplace Awards

The employee-owned jeweler was named a “Best Place to Work” in Maine, New Hampshire, and for women.

Alex Consani in Pandora Talisman campaign
CollectionsAug 27, 2026
Pandora Expands ‘Talisman’ Collection as Lawsuit Continues

The second iteration of the jewelry collection was inspired by the zodiac and the four elements: earth, water, air and fire.

Stock image of loose polished diamonds
SourcingAug 27, 2026
OFAC Renews License Allowing Import of ‘Grandfathered’ Russian Diamonds

General License 104B supersedes General License 104A, which was set to expire on Sept. 1.

Counterfeit Cartier Love bracelet
CrimeAug 27, 2026
Customs Seizes Nearly 900 Pieces of Counterfeit Jewelry

The package, intercepted in Indianapolis, contained fake Cartier, Tiffany & Co., and Van Cleef and Arpels jewelry.

Jessica McCormack South Coast Plaza California Store Exterior
IndependentsAug 27, 2026
Jessica McCormack to Open First West Coast Store

The new location in Costa Mesa, California, marks the brand’s second store in the United States and fourth standalone location worldwide.

Kate Spade Movado watches
FinancialsAug 27, 2026
Movado’s Q2 Sales Up As Younger Consumers Take Interest in Watches

The fashion watch category was once threatened by the Apple Watch, but consumers are now opting for new wearables, said Movado’s CEO.

Retrouvaí flying pig signet ring
SurveysAug 26, 2026
5 Jewelry Insights From The RealReal’s Resale Report

The report delves into trending styles, the most popular jewelry brands by city, and why Belle Époque jewelry could be the next big thing.

AGTA 17th edition gemstone information manual
Lab-GrownAug 26, 2026
AGTA Now Requiring Members to Call Lab-Grown Gems ‘Synthetic’

The association added the requirement to its revised "Code of Ethics" and released the 17th edition of its “Gemstone Information Manual.”

Hand pushing a shopping cart
SurveysAug 26, 2026
Consumer Confidence Dips in August Amid Anticipatory Anxieties

Respondents were concerned about the future of the labor market and their income as well as the rising prices of gas and groceries.

Boucheron Goutte Eternity Question Mark
TrendsAug 26, 2026
Boucheron’s New Campaign Celebrates Its ‘Question Mark’ Necklaces

The campaign highlights the asymmetrical high jewelry necklace style that the jeweler first created in 1879.

×

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