Gold jumped by Rs 600 to Rs 42,514 per 10 grams in local bullion market on Saturday, as its international price also increased to $1,512 an ounce, market sources said. According to Karachi Saraf Association, tola (11.664 grams) price also soared by Rs 700 to Rs 49,600. Silver also closed higher at Rs 1,054.28 per 10 grams.