Gem of Caster
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Table of Contents
"Skill Up Material"
A bright stone glimmering with the power of a Caster.
Best Drop Locations
Best Drop Locations
APD = Avg AP Per Drop
The most efficient quests to farm for the item. Lower is better.
Drop rate estimates based on data collected by /u/Rathus and the Grand Order Subreddit
1st Skill Enhancement
2nd Skill Enhancement
1st Append Skill Enhancement
2nd Append Skill Enhancement
4th Append Skill Enhancement
| Servant | Amount |
|---|---|
 Asclepius | x8 |
213
Posts
18320
Entries
Contributors
Servant Tier List
Servants
Summon Banner ListOlga Marie Quest_1
Summon Simulator (JP)Ordeal Call Bleached Earth - Olga Marie QuestsOrdeal Call Bleached Earth - Free Quests
Larva / Tiamat (Archer)Rabbit's Reviews - ArchiveLostbelt 7: Nahui Mictlan - Spoiler-free Walkthrough
Summon Simulator (NA)
Ryougi Shiki (Moon Cancer)Ordeal Call I: Paper Moon - Spoiler-free Walkthrough
E-Flare MarieOrdeal Call Bleached Earth - Challenge QuestsRabbit’s Reviews #424: Ryougi Shiki (5* Moon Cancer)
Grigori RasputinHunting Quest Part 13FGO Summer 2025 - WalkthroughOrdeal Call New Duties Unlocked: Part 2
Larva / Tiamat[High Difficulty] Legendary Water Source
Passionlip (Saber)
Senji Muramasa
U-Olga Marie
Jeunesse Crane[High Difficulty] Legendary Water SourceMMM - Proselyting Primary-Schooler Performs Purification, Passive to Perfunctory Planetary Perciever of Passing (Summer 2025 Part 2)
BB (Summer)
Altria Caster (Berserker)- MMM - Marie, Merrily Migrating to Mediterranean Miracle, Marvels at Massive Mammaries on Majorly-Maligned Maiden (Summer 2025 Part 1)Lostbelt 7: Nahui Mictlan - Main Quests
Mystic Codes
Miyu Edelfelt (Lancer)
Aesc the SaviorFGO Summer 2025 - Tier List Change Log
Tezcatlipoca
Huyan Zhuo (Berserker)Rabbit’s Reviews #421: U-Olga Marie (5* UnBeast)
Oberon - Advanced Quests
Craft EssencesAbandoned Myth
Kriemhild (Rider)
Scathach-Skadi (Ruler)
Altria CasterFGO Summer 2025 - Quick Farming GuideRabbit’s Reviews #422: Passionlip (5* Saber)
