Almost all diamonds have slight internal and surface characteristics, most of them too small to be seen by the unaided eye. When viewed using a magnification of 10X, they can take various forms such as tiny crystals, clouds or feathers. To determine a diamond’s clarity grade, a gemologist will consider its size, location, quantity and nature. Diamonds possessing no such characteristics are categorized as Flawless (FL) or Internally Flawless (IF). In general, the greater the imperfections are in number and size, the lower the clarity grade. Harry Winston diamonds are selected from the clarity grades of Flawless through VS2.