The Appearance Stone is an item that changes the form of Weapon/ Armor to another Weapon/ Armor form. You can purchase the Appearance Stone in the Cash shop Alt+B>Fashion
How to use?
Step 1: Right click on the Appearance Stone to use.
Step 2: Drag the item to be changed to the Target Weapon slot and click the Start button.
How to remove the Appearance Stone?
Step 1: Buy a Restore Equipment ticket via NPC Grocer in Giran/Gludio.
Step 2: Double-click the Restoration stone to start the process. Drag the changed weapon into the slot and click Start