Visual Enchant Stone
Talk to the Fantasy Isle Paddy to trade Male/ Female Swimsuit, Formal Wear, Santa Outfit, Beach/ Alluring/ Seductive Swimsuit, and Maid Costume into Top-grade/ Option 20 Appearance Stone.
Not dropped by monsters.
Cannot be spoiled.
The chances are official (x1). On servers with x10, x100 and higher rates, drop and spoil come more often.