In Wrath of the Lich King it is item level 232, requires level 80 and sells to vendors for 16g 32s 51c. In MoP Classic it is item level 245, requires level 80 and sells to vendors for 16g 32s 51c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Skyweaver Vestments Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Skyweaver Vestments suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Skyweaver Vestments is part of the transmog set Sunstrider's Regalia (Mage only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Skyweaver Vestments Fits
Other Items Named Skyweaver Vestments
1 other item in the current build is also called Skyweaver Vestments. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 47301 (47296 to 47306) were usually added in the same batch as Skyweaver Vestments: the same quest line, zone, vendor or reward set.