->× UnRanked

-- Copper = class F

->× Ranked

--Bronze = Class E

-- Iron = class D

-- Steel = class C

-- Silver = class B

-- Gold = class A

-- Platinum = class S

-- Emerald = class SS+

Ps: I might use the the classes inter changeable with the ranks

Each rank is classified into three levels

-- Low

-- Mid

-- High.

For example.

-- Low bronze

-- Mid bronze

-- High bronze

->× Treasures

-- Mortal grade

-- Earth grade

-- Heavenly grade

×¬× The first three grades is also classified into 3 levels

-- Pseudo spirit grade

-- Spirit grade

-- Divine grade