Diamond Clarity Grades – Complete Guide

The way diamonds are graded can be quite difficult to grasp, so in order to navigate through this subject we wrote a simple guide that contains full details about each of the 4C’s.  So what is diamond clarity and how does it affect the value of the stone?

According to the amount of inclusions in a diamond, we can determine the clarity grade. While diamonds are naturally created within Earth, they gather tiny elements of carbon or boron and which results in inclusions. They look like small lines, marks, or even colored specks which have direct impact on the clarity of the diamond.  The more visible the inclusions are affects the clarity grade to be lower and the value of the stone declines.

  • (F) Flawless – this is the highest clarity grade a diamond can get. “Flawless” grade means that there aren’t any inclusions on the diamond internally or externally. These types of diamonds are extremely rare and finding them can be very difficult.

  • (IF) Internally Flawless – on the clarity scale, “internally flawless” comes next. The only difference between the two grades is the fact that (IF) diamonds have clarity characteristics on the surface.

    These diamonds have external inclusions without internal flaws and although they are not visible to the naked eye, once viewed under magnification they will appear on the surface of the diamond.

  • (VVS) Very Very slightly Included – the next grade is divided to two categories. The first one is (VVS1) which holds the highest grade of the two and has no visible inclusions at 10x magnification. Only by greater magnification the inclusions will be shown. The second category is (VVS2) and the inclusions on the diamond will appear with 10x magnification or with greater magnification than (VVS1) diamond.

    These two categories are known as “eye clean” and the reason is that the inclusions will only be visible only under magnification.

  • (VS) Very Slightly Included – these diamonds are also divided into two categories. The first category Is (VS1) and it indicates that the diamonds have visible inclusions under 10x magnification, but at the same time it can be quite difficult to notice and locate them. The second category is (VS2), which reflect to diamonds with few visible inclusions under 10x magnification.

  • (SI) Slightly Included – same as the previous section, this grade is split into two as well. These diamonds may have some inclusions visible to the naked eye, but in Nature Sparkle we hand pick these diamond and enhance them in order to make sure that they are eye clean.

    (SI1) and (SI2) are both diamonds that have inclusions visible under magnification but almost always eye clean. (SI2) usually have more inclusions and they can be visible – depending on the cut of the diamond.

  • (I1, I2 and I3) – This grade refers to diamonds that have visible inclusions to the naked eye. While most of the time these diamond will not receive any gem grades, they can be valued for their clarity characteristics.