LONDON, Dec 20: Gold prices edged higher in a quiet European trade on Tuesday, lifted by moderate fund buying and increasing physical demand, but thin volumes are expected to make the market volatile in the last trading days of the year. Spot gold was quoted at $505.40/506.80 by 1104 GMT, up from $503.30/504.10 late in New York on Monday but way below a near-25-year high of $540.90 hit on Dec. 12.—Reuters
