FL - IF Clarity Diamond

Flawless(FL), Internally Flawless(IF). A clarity grade of FL means that no inclusions or surface blemishes can be seen under 10x magnification. A diamond with a clarity grade of IF (Internally Flawless) has no inclusions that are visible under 10x magnification, but it may have very small blemishes or polish marks on its surface. Diamonds with a clarity grade of FL or IF are extremely rare.

Flawless and Internally Flawless certified diamonds are extremely rare. The difference between the two is that internally flawless diamonds (IF), like the FL, are 100% flawless from the inside but IF diamonds will contain surface graining on the outside. These are not technically considered a flaw, but consist in the only point of differentiation between the extremely rare Flawless and the very rare IF clarity grades. FL or IF diamonds may also be referred to as ‘LC,’ meaning “Loupe Clean.”