In an attempt to get a letter of recommendation it seems your contacts have gotten through for you all, Aroona, a letter bearing the sygil of malfurion himself have been sent to you by personal delivery.
Aroona the Night Elf who delivered the letter also told you quietly that the night elven leadership thinks it best if these objects would be handed to them for destruction once you find this final piece. He also stressed out that you shall be monitored for your own safety during the recovery of the item
Thelarwen, Highlord Tirion Fordring of the Argent Crusade has given to you a personal letter of with his recommendation regarding the help of Stormwind "in this matter of utmost importance" and made another letter personally requesting you to hand to the Argent Crusade the three items promptly after finding the third piece of the vision, that is if you should fail to find a way to destroy it.
He also added "I shall see you personally at the most of 7 days from this letter's arrival to your hands for debriefing"
Lilandris, after the people you talked to heard about the perils you had to go to in order to recover the two previous items they have quickly gotten the general's signature on a letter of recommendation to whomever you need to present it to. The letter requests from whomever the person might be to help in whatever way they are allowed by law.
To your mild annoyance they've decided to send 3 highly trained guards with you.
The scrying
After a few days of their scrying through the emerald dream, they managed to pinpoint an object though it's exact nature is concealed by magic apparently to protect it's nature from being discovered.
What is obvious is that it does not currently "do" anything, it's just sitting their in the throne room.
The exact location seems to be under the king's throne
Please do note that anyone involved in the scrying process would be weakened by the effort as the object did try to avoid detection.
Nothing else could be determined about the object.