Emerald Pendant

The Emerald Pendant is similar to the Square Scarf, but trades 1 +damage for a considerable increase in spell resistance. This angelic-only items is found on Efreeti, in the Air Citidel.

Here is what identify reveals about this item:

Object 'emerald pendant' is type armor, extra flags glow hum anti-evil anti-neutral.
Weight is 2, value is 20000, level is 97.
Armor class is 9.
Worn:Takeable Neck
Affects save vs spell by -15.
Affects mana by 100.
Affects damage roll by 9.