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 » RockyTalky
»  » Clarity variations among diamonds
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Clarity variations among diamonds |
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| P: 2/24/2003 1:31:20 PM | |
banzai Rough Rock Total Posts: 16 Last Post: 3/11/2003 Member Since: 1/23/2003 |
How come there are wide variations within clarity definitions given by GIA? For instance, I saw the other day a VS1 which only had 3 pinpoints. One on the table closer to the edge and two on the pavillion side. I've also seen a VVS2 and sometimes a VVS1 with the same number of pinpoints, albeit in slight different locations. Recently, I've seen a VS2 with only one blemish, a crystal in the table very near center. Other times, I have seen VS2 with clouds, crystals, and feathers! Does the location/type of inclusion matter greatly for A. the rating, and B. visual appeal? |
| Posted: 2/24/2003 1:31:20 PM | |
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There are 4 replies to this message. There are 4 replies on this page. |
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| P: 2/24/2003 1:41:33 PM | |
DiamondOptics.com Cut Rock Total Posts: 380 Last Post: 3/15/2006 Member Since: 6/27/2002 |
The location of an inclusion can play a mojor role in clarity grading. For instance, If an inclusion, lets say were dead center under the table of the stone received a Si2 rating. Lets say the same inclusion were located off to the side away from the table, it may receive an Si1. These are judgement calls made by the gemologists whom grade the stones. There are several other factors to take into account, but I think you get the general idea. Kirk
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| Posted: 2/24/2003 1:41:33 PM | |
| P: 2/24/2003 1:45:06 PM | |
Architect Rough Rock Total Posts: 35 Last Post: 2/28/2003 Member Since: 12/11/2002 |
Also, Please take into consideration that the size of the inclusions is a major factor when grading a diamond. Two diamonds can have the same number of inclusions, such as 3 crystals each, but one of the diamonds inclusions can be significantly bigger resulting in a poorer grade quality. For diamonds, the size, type, and location of incluisons are what determine it's grade. |
| Posted: 2/24/2003 1:45:06 PM | |
| P: 2/24/2003 1:54:44 PM | |
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banzai Rough Rock Total Posts: 16 Last Post: 3/11/2003 Member Since: 1/23/2003 |
If the inclusion is dead center vs the same size/type of inclusion that is let's say somewhere off-center, does it.. 1. Have a major effect on brilliance and return of light?
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| Posted: 2/24/2003 1:54:44 PM | |
| P: 2/24/2003 2:35:30 PM | |
trichrome Cut Rock Total Posts: 397 Last Post: 3/22/2004 Member Since: 12/9/2002 |
If you have for example a small cloud right in the middle of the stone but it's so small that the stone is a VS1, by no chance it will ever affect the light performance of the stone. Trichrome.
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| Posted: 2/24/2003 2:35:30 PM | |
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