Gold for delivery in October dropped Rs 148 or 0.47 per cent to Rs 31,180 per 10 gram in a business turnover of 1,034 lots at the Multi Commodity Exchange.
Similarly, the metal for delivery in far-month December was trading down Rs 141, or 0.45 per cent, to Rs 31,310 per 10 gram in 176 lots.
The fall in gold futures was mostly in step with a weak trend overseas after its biggest weekly advance in two months, as the dollar erased losses, dimming the metal's appeal as an alternative investment, analysts said.