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Diamond Clarity

Clarity grades are set by the tiny attributes that occur naturally during a diamond’s growth process (inclusions).

Why is clarity important?

Clarity grades are determined by the number, size and location of tiny characteristics (inclusions) within a diamond. Most of these imperfections are only visible under magnification. These attributes give each diamond a unique identity and are the basis for why no two diamonds are ever the same.


Clarity is considered the least important C because in higher clarity graded diamonds, it can have the least impact on sparkle.


Four Mine does not carry diamonds graded below I1 because they, have significant eye visible imperfections that adversely affect sparkle and durability.


Appearance is relative to diamond fire, brightness and scintillation. Brightness is light reflectiveness. Fire refers to the reflection of rainbow colors that are visible in a diamond. Scintillation is an examination of sparkle. Polish and Symmetry are also visual estimation that affect cut grades. Additional measurements include Table, Depth, Facet Percentages, Crown Angles, Pavilion Angles, Girdle and Culet. The combination of each of these determines the cut grade of each diamond.




Which clarity is for me?

Large inclusions can adversely affect the sparkle of the diamond. Select diamonds whose clarity attributes are smaller and off-center. Avoid diamonds that have eye-visible characteristics.


FL through VVS2 grade diamonds are rare, and therefore most expensive. VS2 and SI1 clarities are more budget-conscious, without sacrificing diamond sparkle. They contain nearly no eye visible inclusions and therefore present significant value. VS2 is the most popular diamond clarity grade.