Gather six types of crystals. (Red, Orange, Blue, Black, White, Green)
They are found on the ground in the Defiled Forest, between ( -440, -29, -70 ) Copy/waypoint -440, -29, -70 and ( -510, -29, -230 ) Copy/waypoint -510, -29, -230.
Each section of this valley spawns a different type of crystal and they all look the same unless highlighted. To avoid confusion, just pick them all.