KARACHI (APP) - Gold surged by Rs686 to close at Rs52,114 per 10 grams in the local market Saturday, as its international price also soared to $ 1,812 an ounce, market sources said. According to Karachi Saraf Association official, tola (11.664 grams) price jumped by Rs800 at Rs60,800. Silver closed higher at Rs1,140 per 10 grams.