Grade of Artifacts:
Ordinary Grade
Extraordinary Grade
Rare Grade
Extreme Grade
Legendary Grade
Mythical Grade
Supreme Grade
...
Ranks:
Common
1st Order
2nd Order
3rr Order
4th Order
5th Order
6th Order
7th Order
8th Order
9th Order
and so on.
...
Skills:
Common
1st Star
2nd Star
3rd Star
4th Star
and so on.