The imports in September 2012 stood at USD 4.6 billion.
Total merchandise imports have also declined, helping narrowing the trade deficit to a 30-month low of USD 6.76 billion in the month under review, according to the Commerce Ministry.
Commerce Secretary S R Rao said: "Government has taken steps to curtail imports of non-essential commodities particularly precious stones. That is the singular reason for decline in trade deficit."
The high level of CAD puts pressure on the rupee, which has depreciated by about 15 per cent since April 30, exposing the economy to balance of payments problem.
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In the first half of this fiscal, gold and silver imports grew by 8.7 per cent to USD 23.1 billion as against USD 21.2 billion in the same period last year.
The government had recently hiked import duty for the third time in a year to 10 per cent from 8 per cent and also banned imports of gold coins and medallions.
India is the largest importer of gold, which is mainly utilised to meet the demand of the jewellery industry. imports stood at around 830 tonne in 2012-13.