Periapt of Life Protection

This amulet provides a +3 Saving Throw bonus versus Death.

In Baldur's Gate: Enhanced Edition it is sold by Xithiss in the Black Pits Tier 2.

In Baldur's Gate II: Shadows of Amn it can be acquired by giving the fake illithium to the Temple of Lathander.

In-game description
"Periapt of Life Protection A heart-sized sapphire sits at the end of a thin silver wire. When worn, this periapt radiates life energy, infusing the wearer with power. The inscription on the back reads: "Against Death we must all fail, but with this gem we may still prevail!""