Gold continued its upward flight on Friday as its price improved by Rs 172 to Rs 48,600 per 10 grams in local market but its international price slipped to $1,640 an ounce, market sources said. According to Karachi Sarafa Association official, tola price also went up by Rs 150 to Rs 56,700. Reuters adds from London: Gold eased on Friday, taking a breather from this week's march higher as the euro dipped and other assets rose, but stayed on track for its biggest 2-week rise in two months as investors returned to the market after last month's price drop.