Some analysts think the silver price must succumb to gravity sooner or later - Getty Images The 126% surge in silver prices, almost double the growth of gold, has left some analysts wondering whether the rally has gone too far. Sameer Samana from the Wells Fargo Investment Institute and Brett Donnelly from independent research house Spectra Markets both feel that further gains may be more difficult to come by and silver ought to take a breather after its record-setting rally. Most Read from MarketWatch ...