The safe haven asset has risen by about 1.5 percent this week so far, boosted by disappointing U.S. non-farm payroll data and Fed chair Janet Yellen's cautious comments on Monday.
"While there is likely further room to the upside for gold, there may be some road blocks to the rally near term. We expect that as the FOMC (Federal Open Market Committee) approaches trading volume may quieten down and some near term traders will book square and take profits," HSBC analyst James Steel said in a note.
"We suspect net long positions have increased significantly and this should be partly reflected in the next set of Commitments of Traders data. This may restrain further purchases and may even trigger profit taking."
The yellow metal has risen 19 percent so far this year and the rally has allowed bullion miners like Barrick Gold among others to eye expansion and study new ways to increase production for the first time in five years.
Russia produced 67.75 tonnes of gold in January-April 2016, up from 63.27 tonnes in the same period last year, the finance ministry said in a statement on Wednesday.
"I think gold is going to stay range bound until we see more confirmation. We need more confirmation from labour market data in the U.S. that we get in a month from now. The market wants to see at least two data points," said Dominic Schnider of UBS Wealth Management in Hong Kong.
"There's lot of uncertainty. That uncertainty needs to be priced out. Do we see that happen in the second half? Yes. But for the time being it's a wait and see game," he added.