The highest item level necklaces a level 31–40 character can wear start with Tellurium Necklace (item level 45, uncommon). 11 items fit the slot and band; the top 11 are ranked here by item level, then quality, not by simulation.
| # | Name | ILvl | Req. | Armor | Type | Source |
|---|---|---|---|---|---|---|
| 1 |  Tellurium Necklace | 45 | 40 | Miscellaneous | Found in Captain's Chest (Tanaris) at 0.8% (+496 more) (vanilla) | |
| 2 |  Lodestone Necklace | 44 | 39 | Miscellaneous | Drops from Helcular's Remains at 0.6% (+495 more) (vanilla) | |
| 3 |  Necklace of Calisea | 43 | 38 | Miscellaneous | Found in Witch Doctor's Chest (Zul'Farrak) at 0.1% (+276 more) (vanilla) | |
| 4 |  Scout's Medallion | 43 | 38 | Miscellaneous | Sold by Kelm Hargunth (Horde) (vanilla) | |
| 5 |  Sentinel's Medallion | 43 | 38 | Miscellaneous | Sold by Illiyana Moonblaze (Alliance) (vanilla) | |
| 6 |  Marsh Chain | 42 | 37 | Miscellaneous | Drops from Foulbelly (Arathi Highlands) at 1.1% (+526 more) (vanilla) | |
| 7 |  Gazlowe's Charm | 41 | 36 | Miscellaneous | Found in Witch Doctor's Chest (Zul'Farrak) at 0.1% (+272 more) (vanilla) | |
| 8 |  Iridium Chain | 41 | 36 | Miscellaneous | Drops from Darbel Montrose (Arathi Highlands) at 1.1% (+477 more) (vanilla) | |
| 9 |  Jet Chain | 39 | 34 | Miscellaneous | Drops from Lost One Chieftain (Swamp of Sorrows) at 1.1% (+447 more) (vanilla) | |
| 10 |  Forest Pendant | 38 | 33 | Miscellaneous | Drops from Lost One Chieftain (Swamp of Sorrows) at 1.1% (+447 more) (vanilla) | |
| 11 |  Thallium Choker | 36 | 31 | Miscellaneous | Drops from Lost One Cook (Swamp of Sorrows) at 1.1% (+496 more) (vanilla) |
Ranked by item level, then quality, among items with a known source: gear nothing drops, sells, rewards or makes yet (raids not yet open, the client's test items) is left out. The class filter keeps what the class can equip at level 40 (armor type, weapon skill, Dual Wield, the item's own class limit); the side filter drops items that only the other side's vendors and quests offer. Source: the best known drop first (a Forever rate at 10+ loots, else the vanilla 1.12 chance), then vendors, quest rewards and the profession that makes it.
Other slots: Finger, Trinket. Every slot and level.