Gold builds on the previous day’s goodish rebound from sub-$4,650 levels and gains some follow-through positive traction toward $4,800 on Tuesday. Despite failed US-Iran peace talks over the weekend, investors seem hopeful that the door for diplomacy remains open and that negotiations will continue. Apart from this, the uncertainty over future interest rate moves by the US Federal Reserve weighs on the US Dollar, which is seen offering support to the bullion.