December's output of 29,781oz came at all-in sustaining costs within Emerald's guidance range of US$740-810/oz, with the exact AISC number to be reported later this month.
Despite the strong operational performance, cash at the end of December rose a comparatively modest A$13 million quarter-on-quarter to $73.6 million.
Okvau suffered a gearbox failure in the September quarter.
The operation has now reported five full production quarters since reaching commercial status.
Okvau's life-of-mine annual production was forecast to be 106,000oz per annum.
Shares in Emerald were down 1% to $1.21 in early trade, capitalising the company at $721 million.
Emerald had debt at the end of the September quarter of US$52 million.
