Developer postOriginal post (opens in a new tab)

Gem Drop Probability Notice

Gem Cave Ticket Drop Rate

Normal Enemy : 1%
Reinforced Enemy : 30%

Gem Cave Reward Grades

Normal 60%
Rare 26%
Epic 10%
Legendary 4%

Gem Box Reward Grades

Rare 45%
Epic 35%
Legendary 20%

Gem Cave & Gem Box Components Probability

Normal Gem Types (Individual drop probabilities are the same.)

Normal Gem of HP
Normal Gem of MP
Normal Gem of ATK
Normal Gem of MAT
Normal Gem of DEF
Normal Gem of MDF
Normal Gem of AGI

Rare Gem Types (Individual drop probabilities are the same.)

Rare Gem of HP
Rare Gem of MP
Rare Gem of ATK
Rare Gem of MAT
Rare Gem of DEF
Rare Gem of MDF
Rare Gem of AGI

Epic Gem Types (Individual drop probabilities are the same.)

Epic Gem of HP
Epic Gem of MP
Epic Gem of ATK
Epic Gem of MAT
Epic Gem of DEF
Epic Gem of MDF
Epic Gem of AGI
Epic Orb of Action
Epic Orb of Fatal
Epic Orb of Evasion
Epic Orb of Regeneration

Legendary Gem Types (Individual drop probabilities are the same.)

Legendary Gem of HP
Legendary Gem of MP
Legendary Gem of ATK
Legendary Gem of MAT
Legendary Gem of DEF
Legendary Gem of MDF
Legendary Gem of AGI
Legendary Orb of Action
Legendary Orb of Fatal
Legendary Orb of Evasion
Legendary Orb of Regeneration