Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Polished Jade Chestguard Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Polished Jade Chestguard suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 10 items nearest to Polished Jade Chestguard (item level 50) in item level among Armor > Plate, Chest slot, from item level 39 to 60.
Blizzard numbers items as they are created, so the named items next to ID 137527 (137522 to 137532) were usually added in the same batch as Polished Jade Chestguard: the same quest line, zone, vendor or reward set.