Gold plunged by Rs 343 to Rs 41,442 per 10 grams in local bullion market on Saturday, as its international price also dipped to $1,495 an ounce, market sources said. According to Karachi Saraf Association, tola (11.664 grams) price also soured by Rs 400 to Rs 48,350. Silver closed lower at Rs 1,054.28 per 10 grams.