The total reserves had increased by $60.5 million to $318.64 billion in the previous reporting week.
Foreign currency assets (FCAs), a major constituent of overall reserves, dropped by $1.028 billion to $290.364 billion for the week under review, the apex bank said.
FCAs, expressed in dollar terms, include the effect of appreciation/depreciation of the non-US currencies such as the euro, pound and yen held in reserves.
After remaining unchanged for many weeks, the gold reserves dipped by $240.7 million to $20.93 billion.
The special drawing rights were down $41.6 million to $4.344 billion, and India's reserve position with the IMF also dropped by $ 16 million to $ 1.671 billion during the week, the RBI data showed.
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