The quality of the diamonds are purely based on the clarity of the diamond pieces. The number, size, color, relative location, orientation, and visibility of all inclusions could affect the relative clarity of a diamond. The diamond clarity is assigned based on the overall appearance of the stone under ten times magnification. GIA Diamond Clarity has higher grades which are more valued. The following Diamond Clarity chart shows different diamond clarity grades.
|FL||Flawless: No inclusions or blemishes are visible to a skilled grader using 10x magnification.||Extremely rare, less than 1 in 5000 jewelry quality diamonds are rated FL.|
|IF||Internally Flawless: No inclusions, only blemishes are visible to a skilled grader using 10x magnification.||FL and IF diamonds appear identical unless viewed under 10x magnification by a skilled grader. Less than 3% of jewelry quality diamonds are rated IF.|
|Very, Very Slightly Included: Inclusions are difficult for a skilled grader to see under 10x magnification.||VVS1 inclusions are typically only visible from the pavilion, while VVS2 inclusions are visible from the crown. In each, the inclusions are invisible to the eye, appearing identical to the higher grades unless viewed under 10x magnification by a skilled grader.|
|Very Slightly Included: Inclusions are clearly visible under 10x magnification but can be characterized as minor.||Inclusions are not visible to the naked eye. Perhaps 1 in 100 untrained observers can detect VS2 inclusions with the naked eye, on close inspection under ideal conditions.|
|Slightly Included: Inclusions are noticeable to a skilled grader using 10x magnification.||SI1 is the lowest grade with flaws often invisible to the naked eye. SI2 inclusions are usually visible to the naked eye, although they will require close inspection.|
|Included: Inclusions are obvious under 10x magnification and may affect transparency and brilliance.||I1 diamonds have inclusions that are almost always visible to the naked eye. Because I2-I3 diamonds have pronounced inclusions, and in the case of I3 may even affect the diamond's durability, they are not offered by Lumera.|
GIA Diamond Clarity is one of the four Cs of diamond grading, the others being carat, color, and cut. This clarity scale is related to the existence of internal characteristics of a diamond called inclusions.