pic, in the past silver typically experienced the strongest move near the end of a run. Currently the Gold:Silver ratio is at 62:1 and in the past three silver peaks (2004, 2006, 2008) it has fallen to the 51:1 to 42:1 range, or $22 to $26 in current gold prices.
Gold still has a long way to go during this current up leg so expect silver to play catch up in the next few months.