Gear Stats
When equipping a character you can determine how the it will affect their overall stats by looking at the up arrow over the piece of gear with the number after it. This number indicates the overal stat boost.
Gear Grade
Each item of gear can be cassified into 1 of 6 grades with substats being added as its grade rises. One to four substats can be added for weapons depending on the grade. Heavenstones can be used to improve the gear to a higher grade and it is possible to acquire a random piece of gear of a higher grade by sacrificing two material gear pieces.
Upgrading Gear
Each item of gear can be leveled up to 30. The higher the level, the better its stats. The skill stats of weapons will increase every 10 levels.