Gold edged lower on Wednesday, pausing after four consecutive sessions of gains driven by safe-haven flows on a cloudy global economic outlook, but sentiment has turned cautious as investors seek further clues to growth. Spot gold inched down 0.2 percent to $1,656.96 an ounce by 0640 GMT, after hitting a one-week high of $1,662.60 on Tuesday. US gold lost 0.1 percent to $1,658.50.