On the Multi Commodity Exchange, yellow metal contracts for October delivery traded higher by Rs 364, or 0.25 per cent, at Rs 1,43,740 per 10 grams in a business turnover of 1,691 lots. The white metal for September delivery increased by Rs 1,156, or 0.53 per cent, to Rs 2,18,354 per kilogram in a business turnover of 2,206 lots