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How To Read ASET Images for Loose Diamonds

Previously on the Adiamor blog, we spent some time breaking down the ASET image as a tool. However, one important topic we did not cover is how to read and use ASET images as a consumer. Although ASET images contain sophisticated information, they are relatively simple to understand. To help our customers make the best possible decisions when buying diamonds online, we will explain how to view ASET images and parse out the diamond specifications they include.

The Meaning of ASET Image Colors

When viewing an ASET image, one of the first things you will notice is there are three main colors: red, green, and blue. The red color represents the brightest light return in a diamond from a direct light source while green demonstrates light return from an indirect light source. This means the red and green colors demonstrate a diamond’s fire and brilliance. The most telling part of an ASET image, though, is provided by the blue colors. Blue is showing the diamond’s internal patterns, and therefore explains the quality of the diamond’s cut. A higher quality diamond cut will provide symmetrical blue coloring. On the other hand, diamonds with poor cut quality will have clustered areas of blue.

The Best Diamonds Have Symmetrical ASET Images

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The easiest way to understand a diamond’s quality by viewing an ASET image is examine the symmetry. Take the above round cut diamond as an example; it is an excellent quality diamond. The more symmetrical the coloring, the higher quality the diamond’s cut. This is because diamonds with ideal proportions will return more light. Therefore, diamonds that return more light and have more sparkle will be more symmetrical. However, because a diamond’s cut is not the only way to measure a diamond’s quality, it is only one part of the equation. Although ASET images are helpful, they are not the only tool for deciding which diamond to purchase.  Before buying a diamond, all of the four c’s must be considered.

 

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What Is An ASET Image?

The quality of diamonds used in fine jewelry is extremely high. This makes diamonds with great fire and brilliance both rare and expensive. When buying diamonds, customers need to have the most information possible. While a knowledge of the four c’s is very important, there are other tools used to help determine the quality and value of a diamond. One such tool is the ASET image.

What does ASET mean?

ASET is an acronym of Angular Spectrum Evaluation Tool. It was designed by the American Gemological Society, or AGS, to show the way a diamond handles light. The purpose of ASET is to provide quantifiable results on diamond light performance. Using this tool, a jeweler or gemologist can explain how the light performance and the diamond’s proportions affect the value of a diamond. These images help customers make a more informed decision when buying diamonds.

What is in an ASET image?

ASET images consist of three colors: red, blue, and green. These colors are representative of light passing through a diamond. Light refracts as it passes through the diamond. Different wave lengths of light appear as different colors. The red color demonstrates the highest amount of light from above. Therefore, red is a good indicator of a diamond’s brilliance. On the other hand, green indicates returned light from less direct sources and reflected back at other angles. Finally, blue shows contrast, or light that enters the diamond but is blocked from returning.

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A sample ASET image of a round diamond

 

Different diamond shapes will present different ASET images, so it is important to understand how to read ASET images. While the AGS created ASET as an evaluation tool, it is not the sole indicator of a diamond’s quality. Additionally, while many diamonds have ASET images, this is not always the case. For instance, recently cut diamonds will often not have one available. If you would like more help in understand a diamond’s ASET image, contact our customer service team today!