Gold gained 15 rupees to 29,565 rupees per ten grams in Delhi's bullion market today, on fresh buying by stockists and investors, tracking a firming trend in global markets. Silver rose 200 rupees to 54,800 rupees per kilo.In London, gold rose 0.4 per cent to 1,580 dollars an ounce and silver gained 0.1 per cent to 28.56 dollars an ounce.