KARACHI (APP) - Gold surged by Rs 172 to Rs 38,400 per 10 grams in the local bullion market Tuesday, as its international price also improved to $ 1,370 an ounce, market sources said. A leading bullion dealer said that tola (11.664 grams) price dropped by Rs 200 to Rs 44,800. Silver also closed higher at Rs 814.28 per 10 grams.