According to the Gem & Jewellery Export Promotion Council (GJEPC), Indian exports of polished diamonds dropped by 15% on the year last month to $1.32 billion.
There was a similar plunge in volume terms, with a fall of 16% to 2.2 million carats.
Meanwhile, imports of polished slumped 72% on the year to $147 million, indicating the decline in demand on the past of Indian consumers.
Imports of rough goods also dropped sharply, plummeting 60% to $625 million as Indian manufacturers cut back on production.
The fall in rough imports was also a result of the Diwali holiday that started towards the end of October.
