In order to grade the clarity of a diamond, it is necessary to observe the number and nature of any internal characteristics in the stone as well as their size and position.
This
Diamond Clarity Grading is carried out using the IGI scope and a loupe 10x under the experienced eye of laboratory gemologists. A diamond is said to be "Internally Flawless" when it presents no internal defects under 10x magnification.
Internally Flawless
Very Very Slightly Included
Very Slightly Included
Free from internal blemishes visible under 10x magnification (small external details tolerated).
Inclusions and/or external blemishes very difficult to locate under 10x magnification.
Inclusions and external blemishes difficult to locate under 10x magnification.
Slightly Included
Imperfect
Imperfect
Imperfect
Inclusions and external blemishes easy to locate under 10x magnification.
Inclusions and external blemishes hard to locate with naked eye.
Inclusions and external blemishes easy to locate with naked eye.
Heavy inclusions very easy to locate with the naked eye.
