The gem merchants are on a small island(forest one side snow the other) SW of steelengrad. To buy nuggests go to the forest with the strongest monsters in the west and head north ***lvl 120+ is a must*** u can also farm ultimetal and gems from the monsters here(youll know its the right forest if u have 5 party members) you see the tower? The shop entrance is on the left...there are other goodies here as well. Happy farming!!!