Gold prices nudged lower on Monday, weighed down by inflation worries that clouded the U.S. monetary policy outlook, while markets awaited developments in U.S.-Iran peace negotiations. Fundamentals Spot gold was down 0.3% at $4,599.45 per ounce, as of 0114 GMT. US gold futures for June delivery fell 0.7% to $4,611.40. US President Donald Trump said that Washington would start an effort