You do not need to have the Seal on, just having it in your bags is enough. You need the seal of assension to start the quest but u can still get the gems even if u don't have it. It will only last for a couple of minutes, so its best to use that item when he's around 20-25% health. This is the Unforged Seal of Ascension. one thing i have noticed is it seems a gem always drops per run, just random who drops it. Before hand the door is unselectable, unpickable and unexplodable. It is no longer required for access to the upper portion of Blackrock Spire (BRS), but it can be worn to protect you from one of Gyth's special attacks as well as summon the spirit of Vaelastrasz the Red to help you in the fight against Rend Blackhand. I recommend getting friends or a guild to help you get the gem as your looking at 20+ raids by your self (could even be much much more). The Seal of Ascension is a ring with several abilities that is obtained through a quest. Thought I'd clarify the matter for peeps. When used you will see a purple orb type object floating a little off of the ground. - When Emberstrifes health reaches around 25%, the person who has the Unforged Seal of Ascension needs to use that item.