What is meant by “clouds not shown” on a diamond certificate?

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Posted by Robert Hensley
Asked on July 12, 2014 4:08 am
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”Clouds are Not Shown” : Under ”Comments” on Cert

In diamond terminology, a “Cloud” is a collection of very tiny white inclusions clustered together. Clouds contain micro-Pinpoints that are so tiny they can require up to 60 x magnification or more to distinquish them clearly.

To show a cloud or group of clouds on a plot – even using ink pens with the finest point you can find – would make it appear far more significant than they are in reality, so they are normally not drawn like larger inclusions are drawn.

Clouds are not extremely important by themselves, since they are very small, and not harmful to the structure of a diamond, and usually only visible under high magnification. The only exception to this would be an extremely large cloud, or a large cluster of clouds, which may impair light flow, which is fairly unusual. Ask your jeweler about that diamond if you have any questions about how the diamond appears.

However, whatever they are, they will NOT worsen the grade or beauty of the diamond more than anything else in that same clarity grade. More on that next. Very importantly, any and all clouds are already considered in the total clarity grade. This means that the influence of the clouds is already part of the clarity grade, so they do not make the clarity grade or beauty of the diamond any less than any other diamond of that same grade.

The only reason this comment is shown on the grading report, si so that you know they are there, even when they cannot accurately draw them on the plot. They are not any more important than any other inclusions in that diamond, unless stated as such.

Therefore, the comment ”clouds are not shown” on a GIA, EGL, or AGS diamond grading report is standard procedure, quite common in diamonds, and not something you should worry about.

NOTE:

The other common comment you can often see in a diamond grading report, and just as misunderstood, is described on my page about ”internal graining is not shown.”

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Posted by Robert Hensley
Answered on July 18, 2014 2:55 am
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