New Delhi, 17 December (NNS): The prices of big cardamom Kainchicut remained stable at Rs 1670 per kg owing to sluggish sale even after the increment in the prices. Recently, the prices have improved by Rs 10 per kg. The average auction price increase to Rs 1450/1787.50 per kg in the last auction which held on 11th December. There is no possibility of more increment in the spot big cardamom prices during the coming one or two days.