De'Arnise Signet Ring

De'Arnise Signet Ring is a ring which can only be worn by Nalia De'Arnise, and because of that it appears in Baldur's Gate II: Shadows of Amn. It grants +2 armor class, +2 to all saving throws and 50% fire resistance. Nalia wears this ring when she joins the party.

In-game description
"De'Arnise Signet Ring

This ring was given to Nalia by her father upon her ascension to adulthood. Bonded to her blood as it is, the ring may not be removed from Nalia, nor its powers used by anyone else. The ring grants a +2 bonus to all saving throws, +2 armor class bonus, and 50% resistance to fire."