In Wrath of the Lich King it is item level 238 and requires level 80. In MoP Classic it is item level 238, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Furious Gladiator's Silk Raiment is listed as Vendor. Appearance ID: 10822. No other item uses this appearance, so it is unique to Furious Gladiator's Silk Raiment.
Read from the World of Warcraft client build files.
How Furious Gladiator's Silk Raiment Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Furious 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 Furious Gladiator's Silk Raiment (item level 35) in item level among Armor > Cloth, Chest slot, from item level 32 to 36.
Items Numbered Next to Furious Gladiator's Silk Raiment
Blizzard numbers items as they are created, so the named items next to ID 41953 (41946 to 41959) were usually added in the same batch as Furious Gladiator's Silk Raiment: the same quest line, zone, vendor or reward set.