The FinMin has built up a cash surplus of about Rs 80,000 crore.
Central bank says it may bring more curbs.
If CAD remains high for 3-4 quarters, central bank may intervene.
Traders had accumulated stocks when the FM hinted of a duty hike.
Chidambaram said he expected gold imports to touch $40 billion in the current fiscal year to end-March, down 31 percent from the year-ago bill of $58 billion.
The wedding season will continue till early January and gold is an important gift item at marriages.