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KurtB

"additional Clouds Are Not Shown"/"internal Graining Is Not Shown"

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Another question, but a quick one this time. What does it mean in the GIA/AGS reports where it says "additional clouds are not shown" and/or "internal graining is not shown"?

 

At first I read it to be a positive thing, reading it to say - 'unlike other (lesser) diamonds, additional clouds do not show in this diamond".

 

After thinking about it a bit, though, I'm realizing it might mean this - "there are additional clouds in this diamond that aren't included (for whatever reason) in the graphic reference diagram included in this report."

 

Can someone ease my confusion? Is it a + or a - for the diamond in question?

Edited by KurtB

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It's neutral. Many times a diamond grading report will list graining, pinpoints, additional clouds, etc. as not shown. The diamond's report is just noting that these things exist for sake of thoroughness. 'Not shown' means they are non-issues and to draw them would complicate the plot unnecessarily.

 

Pinpoints are miniscule spots internal to a Diamond. A cluster of microscopic pinpoints forms a cloud. Drawing them would make them appear far more intense than they actually are. For the sake of thoroughness 'Additional Clouds' are mentioned, since they were taken into consideration for the diamond's total clarity grade. Surface Graining is structural irregularity. It may resemble faint facet junction lines, or cause a grooved or wavy surface. Seen with magnification they may look like polishing lines, but often cross facet junctions (polishing lines don't). Similarly, internal graining was caused by irregularities in crystal growth. They are just natural characteristics of the diamond crystal.

Edited by JohnQuixote

John Pollard

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They are not the primary grader(s) for the Clarity Grade given by the lab and therefore not shown or plotted on the diagram.

 

Non-issue.


Barry
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For sake of thoroughness. They were taken into consideration when grading so they should not be ignored, but to draw them would complicate the plot unnecessarily.


John Pollard

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For sake of thoroughness. They were taken into consideration when grading so they should not be ignored, but to draw them would complicate the plot unnecessarily.

what do you mean by "complicate the plot unnecessarily"?? :)

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For sake of thoroughness. They were taken into consideration when grading so they should not be ignored, but to draw them would complicate the plot unnecessarily.

what do you mean by "complicate the plot unnecessarily"?? :)

 

The clarity grade is based on what you see at 10X mag. If you were to zoom in further you might see all kinds of things (even in a 'Flawless' diamond) but they are non-issues at 10X.

 

Imagine Texas as a diamond. From outer space at 10X mag lets imagine you can see Dallas-Ft Worth, Houston, Austin and San Antonio clearly. These 4 cities set the clarity grade. There are hundreds of smaller cities; some of which might even be barely visible at 10X...but they are non-issues in the grand scheme of things. To draw so much extra would complicate the map you're making that is based on 10x mag.

 

Sorry if this example is a little 'in orbit' :P, its the best I can do on short notice... Season finale of 24 is on.


John Pollard

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The clarity grade is based on what you see at 10X mag. If you were to zoom in further you might see all kinds of things (even in a 'Flawless' diamond) but they are non-issues at 10X.

 

Imagine Texas as a diamond. From outer space at 10X mag lets imagine you can see Dallas-Ft Worth, Houston, Austin and San Antonio clearly. These 4 cities set the clarity grade. There are hundreds of smaller cities; some of which might even be barely visible at 10X...but they are non-issues in the grand scheme of things. To draw so much extra would complicate the map you're making that is based on 10x mag.

 

Sorry if this example is a little 'in orbit' :P , its the best I can do on short notice... Season finale of 24 is on.

hahaha. i like your example! thanks! :P

 

so such comments are serious? :)

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They put it under comments so that you know exactly what's going on with the diamond but that it was of no consequence and a non-consideration and a non-factor in determining the final clarity grade.

 

The comments are "facts on the ground" that are non-visible to the naked eye and a non issue as far as the clarity is concerned.

 

With GIA and AGS grading you can be assured that the color and clarity gradings are accurate and consistent.


Barry
www.exceldiamonds.com
@Exceldiamonds on Twitter

Excel Diamonds on Facebook

sales@exceldiamonds.com
1-866-829-8600
1-212-921-0635

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