The description chart of diamond clarity characteristics is a schematic diagram of the type, size and orientation of diamond internal clarity characteristics, which can well express the characteristics of diamond defects and judge the quality of diamond clarity. If you can understand it, it will be very helpful for you to buy good diamonds.

What clarity features are included in the chart?

When mapping transparency elements, each transparency element is represented by a specific color and shape. Described in red, indicating that the clarity defect is inside the diamond, such as feather pattern and clouds; Red and green represent hole marks, concave natural surfaces, crystals, etched tubes and laser holes; The green pattern is located outside the diamond.

The following are common features and corresponding symbols in engineering drawings:

Common inclusion representation

Some of them are widely distributed or slightly distributed, or are not enough to affect the clarity grade of diamonds or identify the clarity characteristics of diamonds, and usually will not be drawn into GIA certificates. But it may also be marked in the remarks column.

How is the definition feature map drawn?

First, the diamond will be wiped clean by the special wiping cloth for gemstones, and then the facet diagram corresponding to or closest to its shape and cutting method will be selected. Under the gem microscope, the clarity features are found and identified, and the approximate shapes and positions of these clarity features are drawn in proportion according to the images in the magnifying glass of 10. According to their importance to clarity classification, these features generally rank first, which is the category that mainly affects the clarity characteristics of this diamond.

GIA 1.00CT F VS2 3EX has no diamond clarity characteristics, and the main characteristics that affect the diamond clarity are rock crystal inclusions, as well as some kohane vein and needle inclusions.

When choosing diamonds, try to choose the ones with smaller clarity characteristics, which are not so much as a whole. Try to choose the one near the edge, compare more, and always choose the best.

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