Guide:
Enter and explore Viridian Watch solo dungeon east of Evermore. The entrance to this dungeon is inside the wrecked stone tower, close to the lake.
To find the shard, you need to reach the western part of the dungeon. You have to go downstairs, as this part of the cave is on a lower level. There is a rather large rectangle-shaped room in this area. What you are looking for is in the southern part of this room.
