Amulet of Natural Armor
This material is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.
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 bonus of from +1 to +5, depending on the kind of amulet.
Faint transmutation; CL 5th; Craft Wondrous Item, barkskin, creator’s caster level must be at least three times the amulet’s bonus; Price 2,000 gp (+1), 8,000 gp (+2), 18,000 gp (+3), 32,000 gp (+4), or 50,000 gp (+5).