现货黄金涨超0.9%，一度逼近3400美元

Group 1 - Spot gold increased by 0.92%, reaching $3386.06 per ounce, with a daily low of $3338.75 and a high of $3398.97 [1] - COMEX gold futures rose by 0.84%, closing at $3406.80 per ounce, with a trading range of $3358.50 to $3419.80 [1] Group 2 - Philadelphia Gold and Silver Index rose by 2.21%, closing at 207.64 points [2] - Spot silver increased by 0.25%, reaching $36.3455 per ounce, with a daily low of $35.4627 [2] - COMEX silver futures rose by 0.41%, closing at $36.410 per ounce [2] - COMEX copper futures increased by 0.62%, closing at $4.8445 per pound [2]