At Multi Commodity Exchange, nickel for delivery in current month was trading down by Rs 2.60, or 0.40 per cent, at Rs 645.50 per kg in a business turnover of 423 lots.
The metal for delivery in October was also down by a similar margin to trade at Rs 652.60 per kg in a turnover of 131 lots.
Analysts said the fall in nickel prices was mostly in line with a weakening trend in metal overseas after Asia's biggest commodities companies tumbled as the collapse in Glencore Plc's stock highlighted the threat of sliding raw materials prices amid China's economic slowdown.