In Diablo Unique items are categorized with the Unique color. Almost every normal item in the game has a Unique version giving unique properties. The Unique items also follow the Normal/Exceptional/Elite version of the items, however not all item versions have a Unique version.
Required Level: 58 Quality Level: 66 +1 To All Skills 3-5% Life Stolen Per Hit (varies) + (0.5 Per Character Level) 0-49 To Life (Based On Character Level) (varies) +50 Maximum Stamina (Patch 1.09 or later)
The Stone of Jordan Ring
Required Level: 29 Quality Level: 39 +1 To All Skills Adds 1-12 Lightning Damage +20 To Mana Increase Maximum Mana 25% (Any Patch)
Nagelring Ring
Required Level: 7 Quality Level: 10 +50-75 To Attack Rating (varies) Magic Damage Reduced By 3 Attacker Takes Damage of 3 15-30% Better Chance Of Getting Magic Items (varies) (Patch 1.09 or later)
Carrion Wind Ring
Required Level: 60 Quality Level: 68 10% Chance To Cast Level 10 Poison Nova When Struck 8% Chance To Cast Level 13 Twister On Striking 6-9% Life Stolen Per Hit (varies) +100-160 Defense Vs. Missile (varies) Poison Resist +55% 10% Damage Taken Goes To Mana Level 21 Poison Creeper (15/15 Charges) (Patch 1.10 or later)
Dwarf Star Ring
Required Level: 45 Quality Level: 53 +40 To Life +40 Maximum Stamina Heal Stamina Plus 15% Fire Absorb 15% Magic Damage Reduced By 12-15 (varies) 100% Extra Gold From Monsters (Patch 1.09 or later)
Manald Heal Ring
Required Level: 15 Quality Level: 20 4-7% Mana Stolen Per Hit (varies) +20 To Life Replenish Life +5-8 (varies) Regenerate Mana 20% (Patch 1.09 or later)
Nature's Peace Ring
Required Level: 69 Quality Level: 77 Slain Monsters Rest In Peace Prevent Monster Heal Poison Resist +20-30% (varies) Damage Reduced by 7-11 (varies) Level 5 Oak Sage (27/27 charges) (Patch 1.10 or later) (Ladder Only)'
Wisp Projector Ring
Required Level: 76 Quality Level: 84 10% Chance To Cast Level 16 Lightning On Striking Lightning Absorb 10-20% (varies) 10-20% Better Chance of Getting Magic Items (varies) Level 7 Spirit of Barbs (11/11 charges) Level 5 Heart of Wolverine (13/13 charges) Level 2 Oak Sage (15/15 charges) (Patch 1.10 or later)
Raven Frost Ring
Required Level: 45 Quality Level: 53 +150-250 To Attack Rating (varies) Adds 15-45 Cold Damage, 4 sec. Duration +15-20 To Dexterity (varies) +40 To Mana Cold Absorb 20% Cannot Be Frozen (Patch 1.09 or later)
The Stone of Jordan best farm place is Andariel Hell, despite Andariel Nightmare having higher % chance to drop it