Stone Skin IV is an active skill in AION Classic 5.0. The Spiritmaster learns it from level 40. It recharges in 120 s.

Learned by

Class	Faction	Character level	Skill level
SpiritmasterLearned automatically	Both factions	40–48	1–9
SorcererLearned automatically	Both factions	41–49	1–9
SorcererSpiritmasterLearned automatically	Both factions	71–75	10–14

Taught by

Item	Skill level
Stone Skin IVUniversal (Skill Book)
[Event] Stone Skin IVUniversal (Skill Book)