Representational PhotoNew Delhi- Silver prices surpassed the Rs 4 lakh per kilogram mark in the national capital on Thursday, while gold hit a new peak of Rs 1.83 lakh per 10 grams, tracking a sharp rally in global markets and strong investor demand for the safe-haven assets. According to the All India Sarafa Association, silver extended the gains for the fourth consecutive session and surged Rs 19,500, or 5.06 per cent, to a record Rs 4,04,500 per kilogram (inclusive of all taxes). ADVERTISEMENTThe white metal had closed at Rs 3,85,000 per kilogram on Wednesday. In the international market, gold increased by USD 177.14, or 3.3 per cent, to touch a fresh peak of USD 5,595.02 per ounce. Spot silver gained USD 3.59, or 3.07 per cent, to hit a lifetime high of USD 120.45 per ounce in overseas trade.