Chapter 666: Can't Afford it_1

This fellow is actually gnawing on crystal. This is no ordinary crystal; this is a damn Monster Crystal Core!

Moreover, looking at this crystal, even though it's not entirely transparent, the impurities aren't too many. The grade is certainly higher than that of the Crystal Core Xue Lihua gave Yang Gang.

The grade of the Monster Crystal Core is easy to identify. The more transparent it is, the higher the grade. Conversely, the more impurities and turbidity in the crystal, the lower the grade.

Like this Monster Crystal Core, which has been gnawed off by a quarter by the little hamster, the impurity rate is about 30%, making it a fourth grade. It's considered a Crystal Core of ordinary quality. If the impurity rate is less than 20%, it is a third grade; less than 10% is second grade; less than 5% is First-Class.

An impurity rate of zero is the legendary Divine Grade.

So far, this kind of Divine Grade Crystal Core has not been found.

'Gugua, Gugua.'