In The Burning Crusade it is item level 159 and requires level 70. In Wrath of the Lich King it is item level 159, requires level 70 and sells to vendors for 1c. In MoP Classic it is item level 159, requires level 70 and sells to vendors for 1c.
In the Appearances collection, Brutal Gladiator's Silk Raiment is listed as Vendor. Appearance ID: 9151. No other item uses this appearance, so it is unique to Brutal Gladiator's Silk Raiment.
Read from the World of Warcraft client build files.
How Brutal Gladiator's Silk Raiment Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Brutal Gladiator's Silk Raiment suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Similar Items
The 10 items nearest to Brutal Gladiator's Silk Raiment (item level 34) in item level among Armor > Cloth, Chest slot, from item level 32 to 36.
Items Numbered Next to Brutal Gladiator's Silk Raiment
Blizzard numbers items as they are created, so the named items next to ID 35099 (35094 to 35104) were usually added in the same batch as Brutal Gladiator's Silk Raiment: the same quest line, zone, vendor or reward set.