Diamond clarity is the evaluation of a diamond’s internal and external characteristics. The fewer inclusions or blemishes, the more desirable the diamond. Inclusions are internal, that is, inside the diamond. Crystals are merely minerals trapped inside the diamond; feathers are breaks in the diamond. Blemishes are usually very small and are only on the surface of the diamond. To locate these tiny characteristics, an American Gem Society member jeweler will use a binocular microscope that magnifies the diamond 10 times. Then, from an evaluation of the size, location, nature, number, and color of all the inclusions and blemishes, a clarity grade from 0-10 will be assigned – 0 being flawless or internally flawless.
Learn more about the 4Cs: