Gold jumped 450 rupees, to 28,140 rupees per ten grams at Delhi's bullion market on Friday as stockists created fresh positions, following the budget proposal to hike import duty. Silver rose 300 rupees, to 56,500 rupees per kilo, as industrial units purchased more on fears of price rise in the coming days.In New York, gold rose 13 dollars, to 1,657 dollars an ounce.