Ring of Human Influence

Ring of Human Influence gives the wearer a Charisma of 18, whether this does increase or decrease the score of the character. The charisma bonus is stackable with other items which increase charisma, such as Helm of the Noble and Plate of Balduran. Also, this ring can be used once per day to cast Charm Person. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition. It's dropped by Kalah when he is killed at the end of Investigate the Circus Tent.

In-game description
"Ring of Human Influence For seven years Count Fisfnilt searched the Realms for a suitable bride for his son Ewnin. Unfortunately all the women that Fisfnilt found were not up to the standards set by Ewnin, an impossibly spoiled man. Desiring an heir and impatient with his son, the Count had the court mage fashion this ring. He gifted the ring to a woman of no small courtly influence and Ewnin was instantly smitten. They wed three weeks later."