Stone Skin IV is a level 4 active skill in AION Classic 1.9. The Spiritmaster learns it from level 40.

Learned by

Class	Faction	Character level	Skill level
Spiritmaster	Both factions	40–48	1–9
Sorcerer	Both factions	41–49	1–9

Taught by

Item	Skill level
Stone Skin IVSorcerer, Lv 41
Stone Skin IVSpiritmaster, Lv 40

Effect

PvP defence

+400