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Which one to choose based on these images alone?

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Chivas

Rough_Rock
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Mar 23, 2011
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Which diamond in your opinion is the best and which is the worst?

Kindly share your comments with me :wavey:

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About the same. Variation could be due to scanning error. Need real ASET/IS image to confirm.
 
These images are extracted from AGS Platinum reports of the individual diamonds.
 
I think these are computer generated and that is why SC is asking for the real images.
 
Don't have the ASET or IS images at the moment which is why I posted only the computer generated ones and hence the title of the thread... :)
 
Chivas|1300872449|2877994 said:
Which diamond in your opinion is the best and which is the worst?

Kindly share your comments with me :wavey:

sample.png

Interesting question.

Thank you for not sharing name of vendor so that some of us vendors can play without offending since we do not know whose stones they are, or even if they belong to us.

I am going to make some educated guesses, and perhaps you will be kind enough later to tell us how close we were or weren't.

Stone C has a higher pavilion angle than either stone A or B. It is beginning to show what Rhino used to refer too as the ring of death, although that probably will not be observed with our stereo vision as pointed out so often by Serg. It is also not as optically symmetrical as A or B. It has more obstruction at 30 degrees than either A or B, so will loose life quickly if you hold it close to look at it as the obstruction will more quickly affect the light coming back to you as it reaches forty to 50 degrees. (I am referring to the degrees of light obstructed by your head as the stone is brought closer to your eyes for observation. These ASET images are created with an assumed obstruction factor of 30 degrees. For example, a woman with a large bouffant hairdo will see more of the obstruction pattern and less brilliance than a man with close cut hair at the same visual viewing distance.)

A and B are more similar to each other, but I suspect that A has longer lower pavilion mains than B and perhaps longer star facets as well. I believe that A also has a slightly steeper pavilion angle than B, but not by too much.

While I believe just based on these photos that both A and B will be slightly brighter, especially at up close examination, than C, I think that B will have slightly larger virtual facets than A based on the shorter, wider, lower pavilion mains. This then becomes a flavor choice for you to judge with your eyes, as we can not know which of the three stones you will like best when you actually see them.

This then is an interesting exercise in that while all three stones show minor differences in their computer generated ASET images, there may be significant or negligible differences to YOUR eye. There is no way we can know for sure which is the best, or worst for YOU based only on this information, but we can know that all three of these stones should be attractive to most viewers.

To know just how attractive and to which viewers it will be important for the viewer to see the actual stones.

Wink

P.S. I am looking forward to seeing other opinions on these gems, and I am looking forward to seeing what the actual information on the stones reveals.
 
Hi Wink,

thanks for sharing your analysis. This is precisely the type of discussion that I hope this thread will develop into. Just solely based on a computer generated image from AGS Platinum report.

I will reveal more information on the diamonds as more opinions (hopefully) is received :tongue:
 
Btw Wink,

based on your own preference and the limited info you have up to this stage, I'm guessing you will rank A as your preferred diamond and C as the least preferred?
 
Chivas|1300889423|2878138 said:
Btw Wink,

based on your own preference and the limited info you have up to this stage, I'm guessing you will rank A as your preferred diamond and C as the least preferred?

You got C correct for me, but I actually prefer the slightly larger flashes of color and scintillation that I suspect B will generate. When it came to real life viewing it might be a difficult decision for me to choose, and that I can not tell for sure from looking at images. As wonderful as our images have become, the final decision must still be made with the eyes.

Many times my eyes agree with what I think they will see when I look at the stones, but also many times they do not. I do this for a living and look at hundreds of stones a year and still some stones vibrate me to my very core and others do not, even though they look incredibly similar in the images.

That I only carry one brand of stone on my site should say volumes about which diamonds most consistently rock my world.

Wink
 
Seems like not many are in a playful mood like Wink :tongue:
 
Chivas|1300947984|2878741 said:
Seems like not many are in a playful mood like Wink :tongue:

Given that my work regularly requires evaluations on the order of nm and I see regularly what (sometimes shocking) error margins one can be dealing with depending on machination, calibration, how closely a simulation reflects reality and how well the simulation is designed to reflect reality, assumptions and boundary conditions, terms of use and adherence to those terms.. I would not dare to make any declarative statements based on simulations without knowing a whole lot more about what, exactly, the measurement techniques, pros, cons, and error margins that we're dealing with w/ AGS' scanners and simulation programme are.

"Everyone but the experimentalist believes the experiment, and noone but the simulations guy believes the simulation"... true enough, in my niche anyway, when one acknowledges that neither of them have it spot-on...
 
I seem to be having a 'give compliments to Yssie'-day.

You are absolutely correct, Yssie. My experience with the ASET-graphic on the AGS-report is that it is nice to get a general idea, but not detailed enough to assess anything.

Live long,
 
Paul-Antwerp|1300982511|2878967 said:
I seem to be having a 'give compliments to Yssie'-day.

You are absolutely correct, Yssie. My experience with the ASET-graphic on the AGS-report is that it is nice to get a general idea, but not detailed enough to assess anything.

Live long,
I agree with Paul.
Good job Yssie.
 
Yep. The nuances are there and Wink did a fine job nailing it. Stone B looks to have one upper half facet cut slightly on the steep side (=>44 degrees) and the slightly steeper pavilion angle in stone c may or may not show up in an ASET taken in the critical manner Paul and I do it with the illuminated background. Live photography and a Helium Report would show them more critically.

Not sure if the nuances are meaningful enough to see notable differences. There is something I like about Stone C in that pavilion angle, lower half length and total depth % produce that richer blue center, which as Wink noted if a lady with a boufant hairdo held it fairly close would see more obstruction :bigsmile: but sometimes these types can produce some nicer sparkle.

With computer generated images though I'm with Paul, Wink, Yssie & Strm. These nuances we're talking about are speculative and may not even be noted by the average layman.
 
Hi Rhino,

thanks for sharing your comments as well. I'm glad that Wink is not the only person in a playful mood. Actually I fully understand the points brought up by the rest regarding the CGI (computer generated image) on the AGS report... I agree that it will take more than a simple CGI to assess a diamond.

However, it would be interesting too to see how much info we can roughly gather from just the CGI. If its there on the report, I'm sure it is to serve a purpose and provide some details for ppl who only have access to such a report at the start. This would probably help us to (to a certain extent) weed out some of the not-so-nice diamonds.

With the above clarification, I hope that more will share their observations. Tonight (if time permits) I will post the rest of the info on the reports and we can guess which report belong to which stone :naughty:

Btw Rhino, which is your preferred stone? :tongue:
 
Not sure if anyone is still interested but if you are, do take a guess to match the report to the correct stone. Hope I did not include any obvious information which would let the cat out of the bag :)

Report 1
Shape and Style: Round Brilliant
Cut Grade: AGS Ideal 0
Color Grade: AGS 1.5 (G)
Clarity Grade: AGS 2 (VVS2)
Carat Weight: 0.708
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 56.4%
Crown Angle: 34.9
Crown Height: 15.1%
Girdle: Faceted, 1.2% to 3.6%
Pavilion Angle: 40.6
Pavilion Depth: 42.8%
Star Length: 56%
Lower Girdle Length: 76%
Total Depth: 60.6%
Culet: Very Small

Report 2
Shape and Style: Round Brilliant
Cut Grade: AGS Ideal 0
Color Grade: AGS 1.0 (F)
Clarity Grade: AGS 3 (VS1)
Carat Weight: 0.737
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 56.5%
Crown Angle: 35.4
Crown Height: 15.4%
Girdle: Faceted, 1.6% to 3.9%
Pavilion Angle: 40.8
Pavilion Depth: 43.1%
Star Length: 55%
Lower Girdle Length: 78%
Total Depth: 61.7%
Culet: Pointed

Report 3
Shape and Style: Round Brilliant
Cut Grade: AGS Ideal 0
Color Grade: AGS 0 (D)
Clarity Grade: AGS 1 (VVS1)
Carat Weight: 0.708
Fluorescence: Negligible
Light Performance: 0
Polish: Ideal
Symmetry: Ideal
Table: 54.5%
Crown Angle: 34.3
Crown Height: 15.4%
Girdle: Faceted, 1.4% to 4.0%
Pavilion Angle: 40.7
Pavilion Depth: 43.0%
Star Length: 52%
Lower Girdle Length: 79%
Total Depth: 61.6%
Culet: Pointed
 
Report 1 is Stone 2

Report 2 is Stone 3

Report 3 is Stone 1
 
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