Inclusions found on a diamond can be considered nature's birthmarks, the distinguishing characteristics that make the stone unique. When grading a diamond, the amount of inclusions and blemishes has a direct impact on its clarity and value. Flawless diamonds containing no inclusions are extremely rare and very expensive. A majority of the commercially sold diamonds contains inclusions that are undetectable to the unaided eye.
To ensure a large selection, Brilliance offers diamonds with a range of clarity ratings from FL (Flawless) to I1 (Included). Diamonds with clarity ratings of I1 or higher contain inclusions that are typically undetectable without special magnified viewers.
A diamond's clarity rating is based on the size, number, and location of internal and external characteristics. Known as inclusions, internal characteristics include crystals, clouds, and feathers. External characteristics, or surface irregularities, are called blemishes. As most inclusions can't be seen by the naked eye, gemologists use a ten-power (10x) microscope to rate a diamond's clarity.
Contains no internal inclusions when viewed with 10x magnification. Internally Flawless diamonds may contain external characteristics (also known as blemishes).
Contains minute inclusions that are extremely difficult to locate under 10x magnification.
Contains minute inclusions, such as clouds, crystals, or feathers, which are difficult to locate with 10x magnification.
Contains noticeable inclusions under 10x magnification, including clouds, knots, crystals, cavities, and feathers.
Contains very obvious inclusions that can usually be seen with the naked eye, as well as under 10x magnification. Included diamonds sometimes display poor transparency and lack of brilliance.
Below are some points to consider when selecting your desired clarity rating: