Gorgon Plate

Gorgon Plate is a plate mail +4 which offers an armor class of -1 and the usual armor class modifier for this type of armor. It also offers the wearer 15% fire and acid protection. It weighs 30 lbs. This item appears in Baldur's Gate II: Shadows of Amn and Baldur's Gate II: Enhanced Edition.

It's dropped by Patron Mother in Ust Natha.

In-game description
"Hunting Gorgons is a highly dangerous drow sport. Often, after a successful hunt, the blood of the Gorgon is taken and used in the creation of a new suit of plate. This special type of drow plate is actually able to withstand the light of the surface world."