Diamond Clarity Grades

Posted by Ellen Hoffman on

What diamond clarity grades mean

Clarity grades defined by the Gemological Institute of America are as follows:

  • FL Flawless 
    No inclusions and no blemishes visible under 10 times magnification

  • IF  Internally Flawless   
    No inclusions visible under 10 times magnification 

  • VVS1 and VVS2  Very, Very Slightly Included 
    Inclusions so slight they are difficult for a skilled grader to see under 10 times magnification

  • VS1 and VS2  Very Slightly Included 
    Inclusions are observed with effort under 10 times magnification, but can be characterized as minor

  • SI1 and SI2  Slightly Included
    Inclusions are noticeable under 10 times magnification  (SI2 has more inclusions than SI1 )

  • I1, I2, and I3  Included
    Inclusions are obvious under 10 times magnification which may affect transparency and brilliance