Gemstone Clarity

Grade	Description
AAA	Flawless to Eye-Clean, Fine Cut, Perfect Facets & Polish with Full Luster
AA	Small inclusions or flaws which do not interfere with the Light, Luster and Transparency of the Stone, Perfect Facets & Polish.
A	Inclusions or flaws easily visible under naked eye but which do not interfere with the Light, Luster and Transparency of the Stone
AB	Fine colour, small natural visible inclusions and/or flaws in a translucent gemstone, surface clean, fine cut and polished mostly in cabcohon cut
BB	Fine colour, translucent to opaque, surface clean, fine cut & polished mostly in form of cabcohons, cat's eye, stars, plates, carvings etc.

Terms	Meaning	Remark
FL	Flawless	Flawless
IF	Internally Flawless	No Imperfection visible under 10x Magnification.
VVS 1 / VVS 2	Very Very Slightly Included	Some What less Difficult to see imperfection under10x Magnification.
VS 1 / VS 2	Very Slightly Included	Imperfection not obvious but easy to locate under 10x Magnification.
SI 1 / SI 2	Slightly Included	Imperfection very readily visible Under 10x Magnification But not larger enough to be seen by naked eye when the Diamond Is Face up.
I 1, I 2	Imperfect Grades	Imperfection visible to the naked eye when the Diamond is face up.
I 3	Imperfect Grades	Obvious inclusions that may affect transparency and brilliance. Imperfections may take away from the beauty of the stone
Natts	Black Spotted	Full Brilliancy Black Spotted stones.
Eye Clean	Visibly clean with naked eye	The eye clean diamonds are not loupe clean.