New Delhi, 31 January (NNS): The prices of coriander went up by Rs 100 to Rs 8200 per quintal because of the increased offtake at the lower level. During the previous day, the prices have gone down in the same ratio. Around 3500 bags of coriander reported to arrive in the Ramganj mandi and the prices remained stable at the level of the previous day. The active contract improved by Rs 16 or 0.21 percent to Rs 7698 per quintal owing to the feeble speculative buying. There is no possibility of long uptrend in the spot coriander prices during the near future.