Grades of Clarity CODE TERMINOLOGY FL Flawless IF Internally Flawless V VS1-2 Very, very slightly included VS 1-2 Very slightly included SI1-2 Slightly included I1 Inclusions visible to the unaided eye 12-3 Inclusions obvious to the unaided eye      Like people, all diamonds are unique. As diamonds are being formed, small amounts of minerals are trapped in them during the crystallization process. These mineral characteristics identify individual diamonds, much like fingerprints do for people. Called "inclusions", their locations, number, sizes and color determine the diamond's value. The fewer imposing inclusions there are, the higher the clarity of the diamond. It will reflect more light, and the diamond will be deemed more valuable. A diamond without visible inclusions is a rare act of nature. It will return the most light to the eye, since there is nothing to distort the light's path.

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