As the US and Iran deal boosted market confidence, gold and silver prices climbed on Thursday. Gold and silver prices varied slightly across key Indian cities. Check 22K, 24K, 18K gold & silver price in Mumbai, Delhi, Kolkata and other cities here. As the US and Iran deal boosted market confidence, gold and silver prices climbed on Thursday. Gold and silver prices varied slightly across key Indian cities. Check 22K, 24K, 18K gold & silver price in Mumbai, Delhi, Kolkata and other cities here. by Soban News (international And National News)