Other major banks have paid billions of pounds to UK and US regulators over foreign currency manipulation.
Russia's ruble currency has increased in value around 18% since the turn of the year.
For gold to gain any strong momentum, prices have to break above resistance between $1,221 and $1,225 an ounce.
Weak US data to fuel speculation that US Fed will wait until September to hike rates, boosting gold's safe-haven status.
World Gold Council says US centric explanations about gold prices are risky for investors.
US dollar has risen more than 25% against international currencies since summer 2013.
But gains could be short-lived, as rising supplies may weigh on prices again.
US dollar is set to extend its rally against emerging market (EM) currencies over the next 12 months.
North American companies' losses increased by 53% to $27.13bn in 2014.
Korean central bank seeks to boost economic recovery in surprise move.
Uncertainty over Greek debt deal has weighed on the eurozone since leftists won January elections.
Serious Fraud Office investigating potential rigging of money-market auctions during 2007-2008.
Markets uneasy over government pressure on Turkish central bank monetary policy.
German industrial production fell 0.7% from a year earlier in December after dropping 0.3% in November.
Russian currency has fallen in line with oil prices since last summer.