Share this article
US Man Charged Over $25M Diamond Ponzi Scheme That Touted a Crypto Token
A man from Washington, D.C., has been charged with running a diamond investment scam with its own cryptocurrency, Argyle Coin.
Updated Sep 14, 2021, 9:55 a.m. Published Sep 14, 2020, 8:13 a.m.

A man from Washington, D.C., has been charged with running a diamond investment scam with its own cryptocurrency to fund a life of luxury.
- Federal prosecutors in South Florida charged the man, Jose Angel Aman, with wire fraud on Friday.
- Allegations include that Aman and his partners had solicited investors in the U.S. and Canada for a diamond investment scheme, saying he would buy rough-colored diamonds and cut, polish and resell them for profit.
- Promoting the investment as high return and no risk, Aman said the scheme was backed by a $25 million inventory of diamonds, according to the allegations.
- However, the prosecutors claim Aman "rarely" used investments to buy rough diamonds and never refined and resold them; the $25 million inventory was also an alleged falsehood.
- Aman instead made supposed interest payments to earlier investors using newer investors' money and persuaded investors to roll over their investments by falsely claiming their investments were at full value.
- Prosecutors allege that when the scheme, was approaching collapse, Aman launched a purported diamond-back cryptocurrency called Argyle Coin and further solicited investors.
- Again, money from later investors was allegedly used to play "interest" to earlier investors.
- The schemes fleeced "hundreds" of investors for over $25 million, according to the charges, while Aman allegedly used some of the funds to "support his own lavish lifestyle."
- Aman made his initial court appearance in West Palm Beach, Fla., last week.
- Back in May, the U.S. Securities and Exchange Commission moved to halt the operations of Aman, Argyle coin and other entities he operated over similar allegations.
Also read: SEC Moves to Halt Diamond-Linked Crypto ‘Ponzi Scheme,’ Freeze Assets
More For You
Protocol Research: GoPlus Security

What to know:
- As of October 2025, GoPlus has generated $4.7M in total revenue across its product lines. The GoPlus App is the primary revenue driver, contributing $2.5M (approx. 53%), followed by the SafeToken Protocol at $1.7M.
- GoPlus Intelligence's Token Security API averaged 717 million monthly calls year-to-date in 2025 , with a peak of nearly 1 billion calls in February 2025. Total blockchain-level requests, including transaction simulations, averaged an additional 350 million per month.
- Since its January 2025 launch , the $GPS token has registered over $5B in total spot volume and $10B in derivatives volume in 2025. Monthly spot volume peaked in March 2025 at over $1.1B , while derivatives volume peaked the same month at over $4B.
More For You
CFTC's acting chief Pham poised to go to crypto firm MoonPay once Mike Selig lands

The leader of the derivatives regulator is planning to join the crypto industry as the CFTC and other federal regulators work on policies to benefit the sector.
What to know:
- Commodity Futures Trading Commission Acting Chairman Caroline Pham confirmed again that she's heading to crypto firm MoonPay when the Senate confirms her replacement and he's sworn in.
- President Donald Trump's CFTC chair nominee Mike Selig was set for a Senate vote Wednesday evening, according to that chamber's schedule.
- Selig, currently an SEC official, would arrive at the CFTC just as several of Pham's crypto initiatives have gone live.
Top Stories










