Talk to Chymot, outside the lower entrance of the tower. ( 177, 154, -85 ) Copy/waypoint 177, 154, -85
Talk to Vizzeren ( 15, 195, 2 ) Copy/waypoint 15, 195, 2 in Falinpol on Daarspire in Vesspyr Isles and he will give you Vizzeren's Arcanum Vision Elixir
Use Vizzeren's Arcanum Vision Elixir *before* entering instance to update the quest (which then allows you to see and collect the shards).
Note: You must be on or have completed the Family Ties quest and can get a new elixir from Vizzeren. ( 15, 195, 3 ) Copy/waypoint 15, 195, 3
Note: From right at the entrance you can jump down into the red bubbling pool where Ziskaya stands and click the shard at ( -109, -18, 7 ) Copy/waypoint -109, -18, 7
Return to Zal'Urid with the shards.
Search for Chymot on Veiled Thessk. ( -900, -50, 18 ) Copy/waypoint -900, -50, 18
Give Zal'Urid Crusader Jortreva's Healing Scale. (Note this is a quest reward from the quest Meditation and Annihilation, which must be completed before proceeding. To begin the quest line which ends with Meditation and Annihilation speak to Jortreva on Karak Peak ( -464, 139, -313 ) Copy/waypoint -464, 139, -313)