FactSet said the settlement, the third consecutive down day, was the lowest since July 18.
Analysts gave MarketWatch.com two reasons: investor fatigue and the market geared up for the automatic $85 billion in budget cuts known as the sequester, which some say may be supportive for gold.
The price for silver closed up 6 cents at $28.49 an ounce.
The dollar index was 82.329 on the International Exchange Friday, up from 81.97 Thursday.
Against the dollar the euro was $1.3026 from Thursday's $1.3056. Against the yen, the dollar was 93.59 yen from 92.62 yen.
The British pound was 1.5029 from $1.5159 Thursday. The dollar was 1.0271 Canadian dollars from 1.0308 Canadian dollars.