==> Please give me your opinions on these 3 stones

[haagen_dazs]

Hi all
I would like to get some opinions from all of you (Desktop or Real gemologists ).

I am trying to narrow down these three RB diamonds.

Here are the ASET/IS and specifications.
Assume all three diamonds are the same price
All GIA diamonds
All none flouro
All three comments say "additional clouds not shown"

HCA 1.5........HCA 3.3...........HCA 2.4
1.22...........1.24..............1.28
I..............H.................H
SI1............SI2...............SI2
XXX............XXX...............XXX
6.83-6.88x4.22 6.90-6.96x4.27 6.89-6.96x4.29
.................................Has Laser inscrip


Please kindly provide your comments and help me narrow down my choices

If you say something is good or bad, please comment and substantiate so that I can learn how you came to your conclusion. Many many thanks !!


1)
I do notice that the 1.28 despite it being heavier, has the same spread as the 1.24.
Is this possibly due to the larger table of 59% in the 1.28 and larger depth of 61.9% ?

2)
Is there leakage in the 1.28 diamond ?

3)
The 1.24 diamond images look pretty good but the HCA is pretty far away from 2.0.
is this due to the steeper pavilion angle?
Does this steeper angle translate to a slight leakage in 1.24?

Thanks for all your help!

 

[Regular Guy]

By casual review, #1 seems easiest to like of these 3. That''s based on the better score for inclusions, HCA, and corresponding view of leakage in the IS. The diameter differential between is not remarkable. I''d trade these for the lower color.

 

[ChunkyCushionLover]

Date: 10/9/2009 12:52:17 AM
Author:haagen_dazs

Hi all
I would like to get some opinions from all of you (Desktop or Real gemologists ).

I am trying to narrow down these three RB diamonds.

Here are the ASET/IS and specifications.
Assume all three diamonds are the same price
All GIA diamonds
All none flouro
All three comments say ''additional clouds not shown''

HCA 1.5........HCA 3.3...........HCA 2.4
1.22...........1.24..............1.28
I..............H.................H
SI1............SI2...............SI2
XXX............XXX...............XXX
6.83-6.88x4.22 6.90-6.96x4.27 6.89-6.96x4.29
.................................Has Laser inscrip


Please kindly provide your comments and help me narrow down my choices

If you say something is good or bad, please comment and substantiate so that I can learn how you came to your conclusion. Many many thanks !!


1)
I do notice that the 1.28 despite it being heavier, has the same spread as the 1.24.
Is this possibly due to the larger table of 59% in the 1.28 and larger depth of 61.9% ?

2)
Is there leakage in the 1.28 diamond ?

3)
The 1.24 diamond images look pretty good but the HCA is pretty far away from 2.0.
is this due to the steeper pavilion angle?
Does this steeper angle translate to a slight leakage in 1.24?

Thanks for all your help!

1) The Idealscope images need more backlighting its too hard to see the contrast and leakage with such dark images.
2) There seems to be spots in the ASET in stones #1 and #2 that don''t show up on the inclusion plot either your lense was dirty or you mixed up the images. Also not enough backlighting in the ASET either.

I would try to get better Idealscope images, black background ASET is not going to help you see leakage well especially not in these rounds.

 

[Lorelei]

Hi Haagen

Can't tell much from the IS images as they aren't clear, first looks the best by the ASET's - ASET can show both light return and leakage so I can see what I need to from those. All have potential but the first would be my pick - provided that large grade setting cloud plotted isn't affecting brilliance. They all have grade setting clouds which need careful evaluation but this one definitely needs an experienced expert to be able to view the diamond and see if it impacts performance or not.

 

[Lorelei]

Date: 10/9/2009 12:52:17 AM
Author:haagen_dazs

Hi all
I would like to get some opinions from all of you (Desktop or Real gemologists ).

I am trying to narrow down these three RB diamonds.

Here are the ASET/IS and specifications.
Assume all three diamonds are the same price
All GIA diamonds
All none flouro
All three comments say 'additional clouds not shown'

HCA 1.5........HCA 3.3...........HCA 2.4
1.22...........1.24..............1.28
I..............H.................H
SI1............SI2...............SI2
XXX............XXX...............XXX
6.83-6.88x4.22 6.90-6.96x4.27 6.89-6.96x4.29
.................................Has Laser inscrip


Please kindly provide your comments and help me narrow down my choices

If you say something is good or bad, please comment and substantiate so that I can learn how you came to your conclusion. Many many thanks !!


1)
I do notice that the 1.28 despite it being heavier, has the same spread as the 1.24. Yes it is possible, carat weight doesn't always equate to face up spread. Go by the physical diameters to compare spread.
Is this possibly due to the larger table of 59% in the 1.28 and larger depth of 61.9% ?

2)
Is there leakage in the 1.28 diamond ?Yes, I can see it in ASET.

3)
The 1.24 diamond images look pretty good but the HCA is pretty far away from 2.0.
is this due to the steeper pavilion angle? Yes.
Does this steeper angle translate to a slight leakage in 1.24? This can happen, looks like there could be a small amount of leakage in this diamond but it could be slight and not visible in reality.

Thanks for all your help!

 

[stone-cold11]

Date: 10/9/2009 12:52:17 AM
Author:haagen_dazs

1)

I do notice that the 1.28 despite it being heavier, has the same spread as the 1.24.
Is this possibly due to the larger table of 59% in the 1.28 and larger depth of 61.9% ?

2)

Is there leakage in the 1.28 diamond ?

3)

The 1.24 diamond images look pretty good but the HCA is pretty far away from 2.0.
is this due to the steeper pavilion angle?
Does this steeper angle translate to a slight leakage in 1.24?

1) mainly due to the larger crown angle and table. See how much more area that increase in the crown? That is where the weight goes to.

2) ya, slight leakage, probably not noticeable with bino-vision.

3) The 1.24c has the worse score, but slight leakage which is minimize by the larger lower half while the 1.28c although score better on the HCA is not compensated with a larger lower half.