End-of-quarter maneuvering was cited for volatility in the euro on Friday. The euro zone common currency was off 0.2 percent to $1.3014.
Against the yen, the dollar was up 0.8 percent at 99.16 yen.
Gold, which had soared in value as a hedge against higher inflation from the cheap central bank money being printed, has slumped. Despite posting on Friday its largest daily percentage gain in a year, spot gold prices fell about 23 percent for the quarter, the largest quarterly percentage drop on records going back to 1968.
Gold was recently trading at $1,233 an ounce, its lowest level since August 2010.
China's stock markets had also seen their biggest gains in two months after the country's central bank, which had let short-term borrowing costs spike to record highs, said it would ensure its policy supported a slowing economy.
Brent crude oil futures fell 0.7 percent but were up 1.7 percent for the month, the first positive month in five.
Copper edged up but its more than 10 percent decline for the quarter was the worst performance in almost two years.