DRAGON RAJA CORE GUIDE

BLADEMASTER CORE GUIDE

Refer to the Dragonraja BladeMaster Builds section.

GUNSLINGER CORE GUIDE

Refer to the Dragonraja Gunslinger Builds section.

SOULDANCER CORE GUIDE

Refer to the Dragonraja Souldancer Builds section.

ASSASSIN CORE GUIDE

Refer to the Dragonraja Assassin Builds section.

WEAPON EFFECT

When all your Core Gems reach +10 together, You can go to Menu --> Core --> View --> Weapon Effect to activate it. As far as i can tell, this effect is just for visual purposes and does not buff your character stats in any way.
The +10 Weapon Effect i got is River Stynx. i'm not sure if it is different for other classes. Will update soon.

EXCHANGING CORE GEMS

Ever wondered what to do with your Core Gems when you Change Classes? The new Class will need different core gems for their core build. There is a solution, but it will require you to spend some diamonds. From the world map, go to Cassell College, then look at the right hand column of the map. Look for ''Change Gem'' NPC. When you get to him, you will be able to 1 for 1 exchange your gem for another gem. It will cost 50 diamonds per exchange.