Glittering Stones » Diamond 4 C's » Clarity

Clarity

In diamonds, clarity refers to absence of inclusions and blemishes. Since diamonds occurs deep under the surface, most diamonds contains unique birthmarks called (internal) inclusions and (external) blemishes. Diamonds without birthmarks are rare and its rarity affects the value. GIA’s International Diamond Grading System has developed a clarity grade for diamond that ranges from flawless (FL) to diamond with obvious inclusions (I3). Every diamond is unique and none is absolutely perfect under 10 x magnification. GIA Clarity Scale contains 11 grades with diamonds falling into VS (very slightly included) or SI (slightly included) categories. To determine diamond clarity grade, the GIA system consider the size, nature, position, color or relief and quantity of clarity characteristics visible under 10 x magnification.

Flawless (FL)

No inclusions or blemishes visible to skilled grader using 10 x magnification

Internally flawless (IF)

No inclusions and only blemishes visible to skilled grader using 10 x magnification

Very, Very Slightly included (VVS1 and VVS2)

Inclusions are difficult for skilled grader to see under 10 x magnification

Very Slightly Included (VS1 and VS2)

Inclusions are clearly visible under 10 x magnification, but can be characterized as minor

Slightly Included (SI1 and SI2)

Inclusions are noticeable to skilled grader using 10 x magnification

Included (I1, I2, and I3)

Inclusions are obvious under 10 x magnification and it may affect transparency and brilliance