The Oculus is a unique Swirling Crystal, exclusively used by Sorceresses.
The first unique orb (and the only one with Patch 1.09), The Oculus provides a large boost to all Sorceress skills, resistances, cast rate, Energy, and magic find, The Oculus is ideal for all-around Sorceress use. Its ability to teleport when struck, although potentially life-saving, can make it an unpredictable weapon to use, however.
Stats[]

The Oculus
Swirling Crystal
One-Hand Damage: 18 To 42
Required Level: 42
Durability: 50
Staff Class - Normal Attack Speed
(Sorceress Only)
+3 To Sorceress Skill Levels
+5 To Mana After Each Kill
All Resistances +20
25% Chance To Cast Level 1 Teleport When Struck
+30% Faster Cast Rate
+20 To Vitality
+20 To Energy
+20% Enhanced Defense
50% Better Chance Of Getting Magic Items
Exceptional Orbs — The Oculus (Swirling Crystal)
Elite Orbs — Eschuta's Temper (Eldritch Orb) • Death's Fathom (Dimensional Shard)