Gold and silver opened sharply higher on MCX on Wednesday as a weaker dollar and easing oil prices eased inflation concerns and rate worries. Sentiment also improved on optimism around a possible US-Iran peace deal. MCX silver rose 3.1% to Rs 2,52,000/kg, while gold gained 1.7% to Rs 1,52,182/10g. US President Donald Trump hinted at progress in talks, though Iran gave no immediate response.