Grading Systems By Other Organizations
The clarity grading system developed by the GIA has been used throughout the industry as well as by other diamond grading agencies including the American Gemological Society (AGS), and the International Gemological Institute (IGI). There are other smaller labs which use the GIA system as well. These grading agencies base their clarity grades on the characteristics of inclusions visible to a trained professional when a diamond is viewed from above under 10x magnification.
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... EGL diamond clarity grading scales GIA FL IF VVS1 VVS2 VS1 VS2 SI1 SI2 I1 I2 I3 EGL USA IF VVS1 VVS2 VS1 VS2 SI1 SI2 SI3 I1 I2 I3 EGL India FL IF VVS1 VVS2 VS1 VS2 SI1 SI2 SI3 P1 P2 P3 The European ...
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