Gold prices rose more than 1% on Monday, supported by a weaker dollar and lower oil prices, as investors weighed prospects of a breakthrough in U.S.-Iran peace negotiations. Fundamentals Spot gold rose 1.4% to $4,570.88 per ounce by 0045 GMT. US gold futures for June delivery gained 1.1% to $4,572.90. The dollar fell, making greenback-priced bullion more affordable for holders of other