New Delhi, 17 May (NNS): The prices of coriander badami gained by Rs 100 to Rs 8500 per quintal owing to the strong sale at the higher prices. Recently, the prices have gone up by Rs 200 per quintal. There were around 7000/8000 bags of coriander reported to arrive in the Ramganj mandi and the prices held stable at the level of the previous day. The active contract prices rose by Rs 38 or 0.51 percent to Rs 7480 per quintal because of the increased speculative buying. There is a possibility of break on downtrend in the spot coriander prices during the coming days.