Gold eased but remained above the key psychological level of $1,800 an ounce on Tuesday, after surging 1.4% in the previous session, amid persistent worries over the rapid spread of the coronavirus delta variant and expectations that the US Federal Reserve might delay its stimulus reduction. Traders now await the Jackson Hole Symposium later in the week for guidance on the Fed’s taper plans. Meantime, the dollar index was steady after falling about 0.6% Monday.