Ethereal Silk Swatch
This is one of the harder aspects of the PoP Armor Quests to complete. I highly recommend that you check The Bazaar on your server for any Ethereal Silk Swatches before you attempt trying to complete this arduous task. Alternatively you could buy Celestial Essence if any are available which will cut the time it takes you to complete this task in half.
Those of you out there who don't mind a little Tradeskilling and farming some lower level enemies... Well maybe you'll enjoy this part of the armor quest! Now as aforementioned the very first difficult thing we need is Celestial Essence. This is obtained quite a few different ways, let's first start off with the vendor purchased aspect of it. Head on over to Darius Gandril (on Find) in the Plane of Knowledge.
From him I recommend you purchase both Celestial Solvent as well as Concentrated Celestial Solvent. The regular Solvent allows you to do single combines and the Concentrated stuff allows you to combine 3 items at a time. The items that you'll be combining to make the Celestial Solvent are the random Runes, Pages and other assortment of crap that drops off enemies level 60 and below.
If you have no idea what I am talking about, I have compiled a list of materials that are used in crafting the Celestial Essence. Follow the link provided to head on over to that page and see exactly what it is we're looking for. Once you've done all the farming you need to do it's time to craft the item!
Celestial Solvent - Combine with 1 item to make 1 Celestial Essence
Concentrated Celestial Solvent - Combine with 3 of the same item to make 3 Celestial Essence
You will want to do all of these combines in a Mixing Bowl. Any Mixing Bowl works and the combine is no fail so you don't have to worry about blowing all your mats on nothing! Once you get the Celestial Essence(s) that you need the next part will be to make the Ethereal Curing Agent.
Ethereal Curing Agent
In order to make the Ethereal Curing Agent you'll need 2 Celestial Essence (mentioned above), 1 Packet of Paeala Sap which is purchased in PoK from Sirekoth Eshe and 1 Soda which is purchased from Chef Denrun in PoK. Once you've obtained all of these materials you'll need to complete the combine in a Tanaan Brewing Barrel (behind the small bank).
This Brewing Combine has a trivial of 212.
2 Celestial Essence
1 Packet of Paeala Sap
Above I have included a map of where you can find both the Tanaan Brew Barrel as well as the Tailoring Loom. The loom is marked with a red circle to the north and the Brew Barrel with a blue to the southeast. For getting your bearings - the brew barrel is located at the Small Bank. Otherwise use the Guild Lobby as a land mark.
Ethereal Silk Swatch
The Strand of Ether that you need for this combine drops from mobs in Planes of Power zones. The Ethereal Curing Agent we've already gone over how to make. You'll need to complete this combine in the Tanaan Loom (shown on my map above).
This combine has a Tailoring trivial of 220.
1 Ethereal Curing Agent
2 Strand of Ether