Gold hovered near the key level of $1,900 an ounce on Tuesday, as the dollar slid and bond yields weakened, with investors awaiting U.S. inflation data later this week. Sector heavyweight Newcrest Mining NCM.AX advanced as much as 1.2%, while Northern Star Resources NST.AX rose nearly 1%. Buy-now-pay-later juggernaut Afterpay APT.AX rose nearly 1.6%, while intelligence firm Nearmap NEA.AX added as much as 3.1%.