Gold edged higher on Tuesday, paring losses from the previous session, with investors awaiting a key German ruling on the euro zone's bailout fund and a US Federal Reserve decision on possible measures to stimulate the economy. Spot gold had gained 0.2 percent to $1,727.91 per ounce by 0630 GMT, after dropping 0.6 percent on Monday. US gold was little changed at $1,730.40.