Gold tumbled 625 rupees, to 31,100 rupees per ten grams at Delhi’s bullion market, today, on sluggish demand at prevailing higher levels, amid a weak global trend. Silver held steady at 54,300 rupees per kilo, on scattered buying by industrial units and coin-makers. Overseas, gold fell 0.3 per cent, to 1,387 dollars an ounce, on speculation that the US Federal Reserve may start reducing its monthly debt purchases this month. Silver also dropped 0.3 per cent, to 23.78 dollars an ounce.