Gold prices edged lower on Friday, and were set for a weekly loss, as tensions in the Middle East dampened hopes for a U.S.-Iran peace deal amid rising inflation and rate-hike fears. Fundamentals Spot gold was down 0.3% to $4,462.22 per ounce, as of 0049 GMT. It has fallen about 1.6% for the week so far. Get the latest news from India and how it matters to the world with the Reuters India