The rial closed Sunday at a months-long record of 850,000 against the US dollar after surging to 830,000 per greenback earlier in the day.
The currency had traded at over 1 million per US dollar earlier this week.
The surge came a day after representatives from Iran and the US held indirect talks in the Persian Gulf state of Oman to discuss the removal of US sanctions from Iran in return for curbs on Tehran’s nuclear program.
Both sides described the talks as positive while vowing to continue the negotiations next week in search of a basis for an agreement.
Press TV