GIA's clarity scale
GIA’s clarity scale

GIA created the 4Cs, the universal method of describing the quality of any diamond in the world
GIA created the 4Cs, the universal method of describing the quality of any diamond in the world

Exquisite 10.22ct D, Flawless, Pear Shaped Canadian Diamond from Ekati
Exquisite 10.22ct D, Flawless, Pear Shaped Canadian Diamond from Ekati

Materials and images kindly provided by the Gemological Institute of America – GIA
Click images for larger view

Diamond clarity refers to the absence of  inclusions and blemishes. Diamonds without these “birthmarks” are rare, and rarity affects a diamond’s value. Using the GIA International Diamond Grading System™, diamonds are assigned a clarity grade that ranges from flawless (FL) to diamonds with obvious  inclusions (I3).

Every diamond is unique. None is absolutely perfect under 10× magnification, though some come close. Known as Flawless diamonds, these are exceptionally rare. Most jewelers have never even seen one, but I was lucky enough to see, touch and feel one – take a look at this lovely 10.22ct D, Flawless, Pear-shaped Canadian diamond in the image above.