• Clarity is a measure of the number and size of the tiny imperfections that occur in almost all diamonds.
  • Many of these imperfections are microscopic, and do not affect a diamond's beauty in any discernible way.
  • Clarity simply refers to the tiny, natural imperfections that occur in all but the finest diamonds. Gemologists refer to these imperfections by a variety of technical names, including blemishes and inclusions, among others.
  • Diamonds with the least and smallest imperfections receive the highest clarity grades. Because these imperfections tend to be microscopic, they do not generally affect a diamond's beauty in any discernible way.
  • "eye-clean" diamond is the one that has no imperfections visible to the unaided-eye through the face-up.

FL, IF Flawless, Internally Flawless: No internal or external imperfections. Internally Flawless: No internal imperfections. Very rare.
VVS1, VVS2 Very, Very Slightly Included: Very difficult to see imperfections under 10x magnification. An excellent quality diamond.
VS1, VS2 Very Slightly Included: Imperfections are not typically visible to the unaided eye. Less expensive than the VVS1 or VVS2 grades.
SI1,SI2 Slightly Included: Imperfections are visible under 10 x magnifications, and may be visible with the unaided eye.
I1 Included: This grade of diamonds will have minor inclusions that may be visible to the unaided eye.
I2,I3 Inclusions are heavy and visible to the unaided eye