Upgrade Stun Charm through three ranks and it tops out at Stun Resistance Lv3. The first rank costs 500z to craft, every rank after that is an upgrade. Some of the materials only come from Ajarakan and Balahara.
Rank by rank
Stun Charm IRarity 3
Stun Resistance Lv1: Reduces the duration of stun by 30%.
Craftable · 500zStun Charm IIRarity 4
Stun Resistance Lv2: Reduces the duration of stun by 60%.
Upgrade from previous rank · 1,500zStun Charm IIIRarity 5
Stun Resistance Lv3: Prevents stun.
Upgrade from previous rank · 3,000z