
無色I
I Color is the third-highest grade in the 'almost colorless' category. The subtle differences in color pose a challenge for appraisers, and it is characterized by high transparency. Even when set in a ring, distinguishing the color requires a skilled eye.

SI2 - Slightly Included
Noticeable inclusions that range from easy to very easy to see are visible to a skilled grader using 10x magnification.