Silver added 51 cents, or 1.7 percent, and closed at $29.15 an ounce.
The dollar index fell 0.06 percent to 82.82 on the International Exchange.
Against the dollar, the euro was at $1.2903 from Wednesday's $1.2936. Against the yen, the dollar was lower at 94.90 yen from 96.01 yen.
The British pound rose to $1.5172 from $1.5098. The dollar fell to 1.0246 Canadian dollars from 1.026 Canadian.
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