Core Viewpoint - The article discusses the recent fluctuations in precious metals prices, particularly gold and silver, following the U.S. non-farm payroll report and comments from Federal Reserve Chairman Jerome Powell [1] Group 1: Gold Market - Spot gold increased by 2.20% to $3362.15 per ounce, maintaining gains since the U.S. non-farm payroll report [1] - Gold futures for October on COMEX rose by 2% to $3415.70 per ounce, with a weekly increase of 0.69% [1] - Gold prices had previously dropped to $3268.18 per ounce after Powell's press conference on July 30 [1] Group 2: Silver Market - Spot silver rose by 0.88% to $37.0355 per ounce, but experienced a weekly decline of 2.95% [1] - COMEX silver futures increased by 1.03% to $37.090 per ounce, with a weekly drop of 3.30% [1] Group 3: Copper Market - COMEX copper futures saw a rise of 0.46% to $4.4435 per pound, but faced a significant weekly decline of 23.19% [1] - The copper market exhibited a Z-shaped trend, with high volatility observed from July 28 to July 30 [1]