Unique items in the Diablo II Expansion are found rarely, and have generally awesome stats, far better than the Uniques in Diablo II. These Exceptional Uniques are only found in the Diablo II Expansion, not in Diablo II.

There are no new graphics for rings or amulets in the Expansion, and as in Diablo II, no special graphics for any Unique jewelry.

You can not gamble any Uniques in the Expansion, they must be found.
The generation order for unique rings/amulets is now removed in D2X and D2 1.07 or higher. Click to the bottom of the page for an explanation of it in earlier versions of Diablo II.
Rarity is expressed as items per 1000 items of that type. E.g. SoJ is listed at 18.9/1000. This means that out of 1000 unique rings dropped that were high enough level to be the SoJ, 18.9 would be, on average. Expansion odds are listed.
Item Level: Monsters must be of this level to drop a given Unique item. A list of monsters and their Mlvls can be found at Darkness.
Clvl Req: A character must be this level to equip the item.

1.10 and Later Only

Item Name	Misc Stats	Special Properties
Carrion Wind	Item level: 68 Clvl req: 60	+(100-160) Defense vs. Missiles (6-9)% Life stolen per hit Poison Resist +55% 10% Chance to cast level 10 Poison Nova when struck Level 21 Plague Poppy (15 Charges) 8% Chance to cast level 13 Twister on striking +10% of damage taken goes to mana
Nature's Peace	Ladder Only Item level: 77 Clvl req: 69	Prevents Monster Healing Slain Monsters Rest in Peace [can't be resurrected/raised/exploded] Damage Reduced by (7-11) Poison Resist +(20-30)% Level 5 Oak Sage (27 Charges)
Wisp Projector	Item level: 84 Clvl req: 76	Lightning Absorb (10-20)% 10% Chance to cast level 16 Lightning on striking (10-20)% Better Chance of Getting Magic Items Level 2 Oak Sage (15 Charges) Level 5 Heart of Wolverine (13 Charges) Level 7 Spirit of Barbs (11 Charges)

Unique Rings

Item name	Misc Stats	Special Properties
Nagelring	CD2 Rarity: 483.9/1000 D2X Rarity: 283/1000 Item level: 10 Clvl req: 7	Magical Damage Taken Reduced by 3 Attacker Takes 3 Damage +50-75 to Attack Rating +15-30% Magic Find
Manald Heal	CD2 Rarity: 483.9/1000 D2X Rarity: 283/1000 Item level: 20 Clvl req: 15	+4-7% Mana Stolen Per Hit +5-8 Replenish Life +20 to Life +20% Mana Regeneration Rate</small></small>
The Stone of Jordan	CD2 Rarity: 32.3/1000 D2X Rarity: 18.9/1000 Item level: 39 Clvl req: 29	+20 Mana +25% Mana +1-12 Lightning Damage +1 to All Skills

Unique Rings in D2X only

Item Name	Misc Stats	Special Properties
Dwarf Star	Rarity: 188.7/1000 Item level: 53 Clvl req: 45	+100% extra gold found +40 to Maximum Stamina Heal Stamina Plus 15% +40 to Life Magical Damage Taken Reduced by (12-15) Absorbs 15% Fire Damage
Raven Frost	Rarity: 188.7/1000 Item level: 53 Clvl req: 45	Adds 15-45 Cold Damage, 4 seconds cold length Cannot be Frozen Absorbs 20% Cold Damage +15-20 to Dexterity +150-250 to Attack Rating 5% Chance of casting Slvl 5 Frost Nova When Struck
Bul Kathos Wedding Band	Rarity: 18.9/1000 Item level: 66 Clvl req: 58	+0.5 Life per Clvl +1 to All Skills +3-5% Life Stolen Per Hit +50 Stamina
The Constricting Ring Not Enabled. *	Rarity: 18.9/1000 Item level: 95 Clvl req: 95	+100% Resistance To All +15% Maximum Resistance To All -30 Life Drain (-2.93 life/sec) +100% Better chance of getting magical item

The Contricting Ring is not and never has been droppable. We have it listed on our Unique Rings page, and the ring's full stats are listed in the game files, but it has a 0, instead of a 1, in the "completed" column in uniqueitems.txt, the actual game file that sets the properties on Unique items, which makes it undroppable. Anyone who knows anything about MPQ extracting or mod-making can verify this in 30 seconds, and enable it to drop in their Off-realm games while they are at it.

If the item were enabled, the only monsters in the game that could possibly drop the ring are Baal and Nihlathak, since the ring has an ilvl 95, and monsters must be as equal or higher to the ilvl of a unique to drop it. Baal is mlvl 95, Nihlathak is mlvl 98. It might also be possible to find it from chests late in Hell, since though they are capped at ilvl 75 in the game code, people have found items much higher than that from them, including some charms with modifiers that no monster can drop.