Introduction: Players upgrade the Gem Stat with special items.
Rule: Players can get refinement and polishment items in store, daily events and time-limited events to upgrade the Gem Stat. The higher the Gem level is, the harder to upgrade it and the more you can gain.
Open Time: April 2
Entrance: Craft - - Gem Polishing
Unlocked at Lv.300
How to Get:
Gem Refinement Stone (used to refine): Diamond Store, Alliance Store, Lost City, Time-limited Events
Polishing Graver (used to polish): Alliance Store, World Boss, Lost City, Time-limited Events
Rule: Players can get refinement and polishment items in store, daily events and time-limited events to upgrade the Gem Stat. The higher the Gem level is, the harder to upgrade it and the more you can gain.
Open Time: April 2

Entrance: Craft - - Gem Polishing
Unlocked at Lv.300

How to Get:
Gem Refinement Stone (used to refine): Diamond Store, Alliance Store, Lost City, Time-limited Events
Polishing Graver (used to polish): Alliance Store, World Boss, Lost City, Time-limited Events