Amulet of Natural Armor +1
This amulet, usually crafted from bone or beast scales, toughens the wearer’s body and flesh, giving him an enhancement bonus to his natural armor from +1 to +5, depending on the kind of amulet.
Aura faint transmutation; CL 5th
Slot neck; Price 2,000 gp (2), 18,000 gp (4), or 50,000 gp (+5); Weight —
Construction: Requirements Craft Wondrous Item, barkskin, creator’s caster level must be at least three times the amulet’s bonus; Cost 1,000 gp (2), 9,000 gp (4), 25,000 gp (+5)