Serpent Scales

Scales from mysterious reptiles (not yet found in the game) and Dragons! This Reagent is used for defensive spells.

Source
Found on reptiles, mainly dragons, after field dressing the corpse. Also dropped by magic users and found on the ground in dragon-related scenes.

Trivia

 * Serpent scales are a used as reagents in the magic of Ultima VII Part Two: Serpent Isle.