I tried looking if anyone posted this, but didnt find anything so sorry if this is a repost.
Anyway All you need to be is 375 JC and be 70+
1. Get a mage to port you to dalaran. Make it your home if you want.
2. Go to the JC trainer(Timothy Jones) and take the quest
3. The quests requires you to kill a mob and fuse it with 2 cheap and simple crystals(I usualy go to wowhead to find the mob)
4. Go back to dalaran and turn it in. You get Dalaran Jewelcrafter's Token
5. Speak to Tiffany Cartier who is right near Timothy and you can buy Dragon's Eye from her.
6. Check the AH and post Dragon's Eye for a reasonable price
This depends a lot on the economy of the server. Dragon's Eye can be anywhere from 200g to 500g. Ive even seen it go 700g. It is also a daily so you can redo this the next day.
It sounds obvious, but a lot of people may not know about this.
Hope this helps
EDIT: k There is one quest before you do the daily, as jho369 said
And for the daily, the mob is random so you have to find it.
For Example: The quest may say it drops off any Death Revenant
there may not be a mob named "Death Revenant" but just search for something like "Revenant" and it should come up with some choices on wowhead or w/e you prefer to use. Some may be harder than others to find. The item for the quest is also a chance on drop for the mob, but usually it drops pretty quickly.