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You always say that you want K9 crystals ONLY.But do you know how many GRADES are there for K9 crystal raw materials? And do you know how to distinguish the difference?

Jul 02, 2019



You always say that you want K9 crystals ONLY.But do you know how many GRADES are there for K9 crystal raw materials? And do you know how to distinguish the difference?

 

There are A,B,C,D,E grades for K9 crystals.

 

A grade:

No inner impurities and bubbles inside

Without non-homogeneous inside

Perfect shape


B grade:

No inner impurities inside,but have few TINY bubbles inside

Without non-homogeneous inside

Perfect shape


C grade:

No inner impurities inside,but have some SMALL bubbles inside

Without non-homogeneous inside

Perfect shape


D and E grade(also called K7 crystals)

Have small inner impurities inside,but have many bubbles(big and small) inside

Without non-homogeneous inside

The shape is no good and the surface is not flat

 

Different grades,different quality,the prices are big difference.