Clarity characteristics: Feather, Cloud

[TJSaluki]

Hi,

So I received the diamond today and it looks very nice. My concern is, I am not obviously an expert, so I dont have anything to compare it to. To me, a J fair cut SI2 would probably look "nice". My question is, does anyone have experience with the GIA dossier report?

I am concerned about the indication of a "cloud". Since there is no plot.....a "cloud" could mean anything from a small pinpoint cloud in the corner of the stone, to a giant cloud covering the entire face of the stone. It is an SI1, but does anyone have experience in knowing how the GIA would grade concerning clouds? I would expect if the cloud affect the stone''s brilliance to a certain degree, the clarity would obviously be in the I1-3 range.

Thanks in advance,
Terry

PS. The color is H, cut ex, polish-ex, sym-ex.....................got excellents on everything on the holloway calc, cept for spread which was VG. Ct .92

Paid 3800 for the stone........does it seem like something is off here?

 

[Lorelei]

Date: 3/4/2010 11:20:47 AM
Author:TJSaluki
Hi,

So I received the diamond today and it looks very nice. My concern is, I am not obviously an expert, so I dont have anything to compare it to. To me, a J fair cut SI2 would probably look 'nice'. My question is, does anyone have experience with the GIA dossier report?

I am concerned about the indication of a 'cloud'. Since there is no plot.....a 'cloud' could mean anything from a small pinpoint cloud in the corner of the stone, to a giant cloud covering the entire face of the stone. It is an SI1, but does anyone have experience in knowing how the GIA would grade concerning clouds? I would expect if the cloud affect the stone's brilliance to a certain degree, the clarity would obviously be in the I1-3 range.

Thanks in advance,
Terry

PS. The color is H, cut ex, polish-ex, sym-ex.....................got excellents on everything on the holloway calc, cept for spread which was VG. Ct .92

Paid 3800 for the stone........does it seem like something is off here?

GIA diamond dossier is fine and nothing to worry about, its a perfectly respectable report.

Concerning the cloud, its difficult to tell as the dossier does not feature a clarity plot as you are aware, I would get an appraiser to inspect the stone if you are worried, its unusual for SI1 clouds to be an issue but you would be justified in checking.

Spread - only diamonds with shallower depths get excellent on the HCA so nothing to worry about.

appraiser tool

 

[TJSaluki]

Quick question.....how would one find a qualified independant appraiser. I obviously dont want to bring it into a store when the salesperson would be sensing any concern on my part. Anything to look for in appraiser qualifications?

Thanks,
Terry

 

[Tom Gelb]

I am concerned about the indication of a ''cloud''. Since there is no plot.....a ''cloud'' could mean anything from a small pinpoint cloud in the corner of the stone, to a giant cloud covering the entire face of the stone. It is an SI1, but does anyone have experience in knowing how the GIA would grade concerning clouds? I would expect if the cloud affect the stone''s brilliance to a certain degree, the clarity would obviously be in the I1-3 range.


I think that this is an unsafe assumption, and I agree that an independent appraisal is well worth the cost/effort. I cloud throughout a stone could affect brilliance and still be graded SI1.

Good luck.

 

[30yearsofdiamonds]

Hey Tom Gelb, how are you, it''s Dan Gillen.

Both Tom and I worked at GIA for along time and he is right. Hopefully it is not a cloud throughout stone issue, you are much better off with a medium sized cloud that is easy to see with a loupe. Any experienced gemologist can tell you that in a second as should the person selling the stone.

 

[jet2ks]

Date: 3/4/2010 11:53:58 AM
Author: TJSaluki
Quick question.....how would one find a qualified independant appraiser. I obviously dont want to bring it into a store when the salesperson would be sensing any concern on my part. Anything to look for in appraiser qualifications?

Thanks,
Terry

Try here first

https://www.pricescope.com/appr_list.aspx

 

[TJSaluki]

Thanks all,

The stone looks great, from what I can discern, but again, I havent seen another stone of similar cut to compare it to. I guess my point was.....if there was a large "crack" or feather, super easy to see, right smack dab in the middle of the stone.....I would assume GIA would give that stone a lower clarity grade than say a small feather on the side of the stone. Obviously, I would think, the more pronounced the inclusion, as it pertains to affecting the light return etc, the lower clarity grade it gets.

So, the same holds true for clouds I would think.....small cloud on the side, higher C grade. Large cloud throughout the stone, low C grade? I think Tom spoke to my concern and stated that this assumption was not entirely correct. So, I''ll have it appraised and see what happens. Thanks all for the input!

 

[FB.]

The first-listed inclusion is the grade maker.
If feather is listed first, then the cloud is probably minor and nothing to worry about.
Probably the only thing that would worry me about a SI1 would be a cloud as the grade-setter.
In SI1 stones, most of the inclusions will not be a problem, although many will be borderline eye clean.

The HCA has a cut-off for "Excellent" spread at 60.3%. Not many stones attain quadruple excellent. Those that do, can have "obstruction" problems, or are the 60/60 type, which isn't to everyone's taste.
Spread just means that it looks big for its weight.

I have a GIA-triple-Ex, H&A that misses out on HCA quadruple Excellent by a whisker.

Crown angle: 33.0
Pavilion angle: 41.0
Table: 59%
Depth: 60.5% (if this had been 60.3%, the stone would get excellent for spread)

 

[Lorelei]

Let us know how you get on.

 

[TJSaluki]

Follow up:

Had it looked at today..........the feather is small and not in the middle.........and the cloud could not be found, so I guess that''s a good thing. All in all, I''m happy with the purchase.......

One additional question: I want to use a diamond that has been in my family for years as a sidestone. It is appx .70 ct, H, SI1-2 and european cut. Any suggestions for settings that won''t make this ring look like an anniversary band? I''m afraid the stones are too close to the size of the .92 to provide contrast. Also concerned about the brilliance of the euro cuts compared to the center stone..........does anyone think this would look weird to have the euros next to the traditional cut center stone?

Thanks,
Terry

 

[stone-cold11]

depends on personal preference, some like the ratio. Probably look like the 86% diameter ratio in the image below, depending on the diameter of you OEC.

 

[Tom Gelb]

Date: 3/4/2010 3:38:46 PM
Author: 30yearsofdiamonds
Hey Tom Gelb, how are you, it''s Dan Gillen.


Both Tom and I worked at GIA for along time and he is right. Hopefully it is not a cloud throughout stone issue, you are much better off with a medium sized cloud that is easy to see with a loupe. Any experienced gemologist can tell you that in a second as should the person selling the stone.

Hi Dan,

I am fine, and I hope all is well with you.

Talk soon?

Tom