SRD:Periapt of Proof against Poison

Periapt of Proof against Poison: This item is a brilliant-cut black gem on a delicate silver chain. The wearer is immune to poison, although poisons still active when the periapt is first donned still run their course.

Faint conjuration; CL 5th; Craft Wondrous Item, neutralize poison; Price 27,000 gp.