Diamond clarity is one the 4Cs of diamond qualities. It refers to any flaws, or inclusions within the diamond, and how visible or detectable they are. Inclusions could be foreign substances, or minute cracks or flaws. It also refers towards the appearance of any surface flaws or scratches. As with the color grading scales, clarity also has a grading scale, with FL used to denote a flawless diamond. What FL indicates is that there are no flaws or inclusions that can be observed when the stone is examined below 10X magnification, the standard for examining for flaws.

Other clarity designations are:

IF stands for internally flawless. This indicates there are no internal flaws or inclusions, although there might be small surface flaws.

VVS1 and VVS2 stand for Very Very Slight inclusions that are difficult to determine under magnification. VS1 and VS2 indicate Really Slight inclusions that can be observed below magnification but are invisible towards the naked eye.

SI1 and SI2 denote Slight Inclusions that may or might not be visible towards the naked eye.

I1, I2 and I3 are “imperfect”, with inclusions clearly visible to the naked eye. For I3, the inclusions effect the brilliance from the diamond and are large and obvious.

In most cases, there’s nothing that can be done about flaws or inclusions, even though in recent years lasers have been utilized to enhance some inclusions or fractures in diamonds by filling them in, much the way little dings in a windshield are filled in.

Certainly the most highly valued diamonds are those that are flawless – FL – or internally flawless – IF. But excellent values can be obtained at the VVS and VS grades, as these are flaws not noticeable to the naked eye, but only to an experienced grader under magnification.

Diamond certification is essential when you are purchasing a diamond and is different from a jeweler’s appraisal, although the certification is part of any appraisal. Numerous diamonds look the exact same, but not all of them are going to be from the quality you may like. Diamond certification is the written proof of a diamond’s attributes. Without it, you have no assurance that the diamond you’re purchasing is of the quality you are paying for. With it, you know the precise grading for every from the 4Cs – color, cut, clarity and carat weight, and, therefore, the diamond value.
Certification gives you the info you need to assess a diamond’s value compared to other diamonds. It also enables you to make an intelligent comparison with other diamonds either in the same jewelry shop or in one more.

Diamond certificates are issued by independent gemological laboratories, not your jeweler. There are a number of grading laboratories, one of the most prominent being: the International Gemological Institute (IGI); the Gemological Institute of America (GIA); the American Gem Society (AGS); the European Gemological Laboratories (EGL) and GemEx Systems.

Whenever you buy a diamond, be sure to question the sales associate very first about the characteristics or attributes from the stone. Ask to determine the diamond certification that will accompany the diamond whenever you buy it. Should you do some comparison shopping, you’ll note that the quality of the diamonds every jeweler carries varies depending on the shop.

A diamond certification will also give you indicators about other diamond qualities, for example fire, brilliance and scintillation, also called Return of Light. These qualities refer to how light is refracted back to the viewer when held stationary or when in motion. The certification will also provide you with a measure of the stones fluorescence. These factors also impact the beauty and brilliance of your diamond.

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