First seen in build 12.0.7.68887 (Midnight (patch 12.0.7)).
Related
Earthrune Robe Game Data
Appearance
Appearance ID: 27664. No other item uses this appearance, so it is unique to Earthrune Robe.
Read from the World of Warcraft client build files.
How Earthrune Robe Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Earthrune Robe suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Similar Items
The 10 items nearest to Earthrune Robe (item level 13) in item level among Armor > Cloth, Chest slot, from item level 12 to 15.
Blizzard numbers items as they are created, so the named items next to ID 239998 (239993 to 240003) were usually added in the same batch as Earthrune Robe: the same quest line, zone, vendor or reward set.