Secret Gem of Caster

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Best Drop Locations
Best Drop Locations
| Quest | APD ▴ | 
|---|---|
| Caster Training Ground - Extreme Friday - Chaldea Gate | 50.3 | 
| Caster Training Ground - Expert Friday - Chaldea Gate | 52 | 
| Caster Training Ground - Advanced Friday - Chaldea Gate | 135 | 
| Castle of the Sun King Camelot - Great Temple - Camelot | 307 | 
| Terrifying Wasteland Atlantis: Deimos Island - Lostbelt 5 Part 1: Atlantis | 368.4 | 
| Demon's Garden Shinjuku - Shinjuku Gyoen - Shinjuku | 477 | 
| Garden of the Sphinx Camelot - Sandstorm Desert - Camelot | 579 | 
| Valley of Diamonds Agartha - Chasm in the Earth - Agartha | 583.3 | 
| Crystal Palace Ruins Hyde Park - London | 640.3 | 
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
5th Skill Enhancement
6th Skill Enhancement
5th Append Skill Enhancement
6th Append Skill Enhancement
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