Iran executed a gold dealer known as the "Sultan of Coins", in a warning to merchants not to exploit the country's financial troubles as US sanctions squeeze the economy.
They were convicted of manipulating coin and hard currency markets through illegal and unauthorised deals, as well as smuggling.
Mazloumin, 58, had been arrested in July for collecting the coins over 10 months to agitate the market.
Vahid Mazlumin, known as the "sultan of coins", and his accomplice Mohammad Ismail Qasemi, also known as Mohammad Salem, had been convicted of "spreading corruption on earth", a capital offense under the Islamic law.
"With these abhorrent executions the Iranian authorities have flagrantly violated global law", said Philip Luther, Amnesty's Middle East and North Africa research director.
Many Iranians have stocked up on gold coins and other safe haven investments as the rial has plummeted this year to 135,000 to the dollar from last year's rate of around 40,500. At the end of summer in this middle Eastern country has created a special "anti-corruption" the courts for verdicts on the financial, prestupleniyu Iran for corruption crimes in the sphere of economy was executed two people.
A third person, Hamid Bagheri-Dermani, was also accused of corruption and sentenced to death in preliminary hearings.
It is noted that during the work of these courts issued at least seven death sentences, and some meetings were broadcast on television live. His case was up for appeal before the Supreme Court, but the status of his case was not immediately clear.
The UN, Western countries, and worldwide human rights groups have expressed concerns about the rising number of executions and reported torture incidences in Iran for a variety of alleged offenses, including issues related to religious freedom, women's rights, and economic protests.