Gold and silver gained due to short coverings and profit-taking in the dollar index, Manoj Kumar Jain Prithvifinmart Commodity Research said, adding that the trend is volatile. Gold prices recovered from nine-week lows, and silver prices also recovered from four-month lows, Jain said. International gold prices crossed $1850 per troy ounce, and silver prices also crossed $21.20 per troy ounce levels, he added.