You cannot be Maimed - Not working

Have an abyssal jewel equip in Stygian Vise but still getting maimed constantly by mobs

Item Class: Abyss Jewels
Rarity: Rare
Ancient Sphere
Ghastly Eye Jewel
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Abyss
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Requirements:
Level: 32
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Item Level: 84
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5% increased Damage (implicit)
You cannot be Maimed (implicit)
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+9% to all Elemental Resistances
+15% to Cold Resistance
Minions Regenerate 32 Life per second
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Place into an Abyssal Socket on an Item or into an allocated Jewel Socket on the Passive Skill Tree. Right click to remove from the Socket.
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Corrupted