tired of being asked this question in guild so here goes :
in the far south east part of greater divide is a cave of coldains. it is also where the dervishes spawn now. but the last cave is where laima rotgur spawns. in that last cave , there are crystals on the ground. if you clear around them, you can then equip ( primary) the chisel and just walk over the crystals and an item pops in your curser. do that to 7 different crystals ( or use the cheat method) to complete that step.
cheat method = go into that room, go far east as you can. then north. there is a single crystal with no mobs around it. you can walk over that one to get a crystal without killing anything. then you camp out and repeat until you get all 7