Gold surged 660 rupees, to 32,200 rupees per ten grams at Delhi's bullion market, today, on sustained buying by stockists, driven by a firm global trend. Silver rose 70 rupees, to 55,500 rupees per kilo, on increased offtake by industrial units and coin-makers. Silver coins spurted 1,000 rupees, to 89,000 rupees for buying 100 pieces.