Titan iron ore can be used for mineral processing to produce 80% Titan iron powder, and 10 powder can be exchanged for a coin. The damaged necklace can only be made once, and only one coin can be given, and then one coin every day, one day ... It is suggested to change the exclusive gem map of jewelry first, two coins, which are sold by the woman in the middle of the Dalaran technician, and four coins of purple map (all cut longan stone).