From Granblue Fantasy Wiki
Vermilion Stone is a silver quest treasure from Albion Citadel.
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- Chapter 17 Free Quest: I Challenge You! - 25 AP (silver chest, -characters only, 2-4 per quest). Also drops and . Recommended to run with double Belle Sylphid to get the first stage or second stage Rare Monster to appear; they have the chance to drop the 3rd and 4th Vermilion Stone (the first two are guaranteed drops).
- Chapter 18 Free Quest: Strength and Chivalry - 50 AP (silver chest, 5-8 per quest) - only available twice a day. Requires completeing main quest Chapter 54 to unlock.
- Chapter 19 Free Quest: Spring Cleaning -- 20 AP (silver chest, 0-7 per quest). Also drops .
- Chapter 20 Free Quest: What's in the Box? - 20 AP (silver chest, 0-9 per quest,usually 1-3). Also drops and .
- Drop from Will-o'-Wisp Showdown
- Drop from Normal and Hard Luminiera raids (silver chest)