And the winner is.......

[mightytower]

Hey everyone, I would appreciate help choosing the best of the following diamonds, based on their certs. Anyone willing to help, I thank you in advance.

They are as follows:

1. Report: GIA
Shape: Round Ideal Cut
Clarity: SI1
Depth: 61.6
Table: 55
Crown Angle: 35
Crown %: 15.6
Pavilion Angle: 41.1
Pavilion %: 43.5
Girdle: Thin to Medium-Faceted
Polish: Excellent
Symmetry: Very Good
Culet: None
Fluorescence: None

2. Report: AGS
Shape: Round Ideal Cut
Clarity: SI1
Depth: 60.1
Table: 57
Crown Angle: 34.6
Crown %: 14.9
Pavilion Angle: 40.7
Pavilion %: 42.9
Girdle: Thin to Medium Faceted
Polish: Excellent
Symmetry: Excellent
Culet: Pointed
Fluorescence: None


3. Report: AGS
Shape: A Cut Above H&A
Clarity: SI2
Depth: 60.1
Table: 56
Crown Angle: 34.8
Crown %: 15.2
Pavilion Angle: 40.7
Pavilion %: 42.8
Girdle: Thin Faceted
Polish: Ideal
Symmetry: Ideal
Culet: Pointed
Fluorescence: None


4. Report: AGS
Shape: A Cut Above H&A
Clarity: SI1
Depth: 60.1
Table: 55.3
Crown Angle: 34.6
Crown %: 15.4
Pavilion Angle: 40.6
Pavilion %: 42.8
Girdle: Thin to Medium
Polish: Ideal
Symmetry: Ideal
Culet: Pointed
Fluorescence: None

I prefer number two, I think, based on what I know. I think.

 

[JulieN]

Get rid of 1. Please post idealscopes for 2, 3, and 4.

 

[KristyDarling]

I like #2, as long as it''s eye clean. Angles on 2-4 look good but #2 is spreadiest. And I think faceted girdles are nice.

 

[JulieN]

KD, can you explain to me how you know #2 is the spreadiest?

 

[sunkist]

They''re all really close. Just looking at #s I''d rank it #3, 2, 4, 1.

 

[KristyDarling]

Date: 5/10/2006 6:46:55 PM
Author: JulieN
KD, can you explain to me how you know #2 is the spreadiest?

The table percentage. (someone correct me if I''m wrong!)

 

[JulieN]

So say you have a 34.5 CA on two stones, and then a 56% T and a 58%T. That means that the 58% was "chopped off" sooner than the 56%, meaning that the CH is less on the 58%... and then how do you extrapolate that to more spread?

ETA (more rambling): so if the CH is less on my stone 2 (58T) and keeping depth, girdle, and carat constant, that means that the PH must be deeper on the 58%.

In the case of MightyTower's stones, depth and PA are pretty constant, with T and CA (and correspondingly, CH) being different....

Anyway, point is: I am not sure you can't just look at 58T and 56T and say, 58 is spreadier. I think you have to know...everything else.

 

[mightytower]

This has me in over my head. CH, TA, I don''t understand. I don''t know what spreadiest means.

 

[JulieN]

CH-crown height
T-table
CA-crown angle
PA-pavilion angle
PH-pavilion height

Spread is the the face-up area of the stone.

I can't choose between 2-4 just by numbers. Defintely need Idealscope. If you want me to pick the best deal (assuming they're all eyeclean) I need prices and dimensions (spread)

 

[strmrdr]

2 3 and 4 have the same depth so for any given weight they would be close to the same spread.

spread is weight for diameter.
For example a 1ct stone that is 6.5mm wide would have better spread than one that is 1ct and 6.4mm wide.

There isnt enough info to pick from them.
Need to know which is eyeclean and get IS images.

 

[mightytower]

Number 2: http://www.whiteflash.com/diamonds/certificate.aspx?idno=2362028&file_name=3

Number 3: http://www.whiteflash.com/diamonds/certificate.aspx?idno=2362001&file_name=3

Number 4: http://www.whiteflash.com/diamonds/certificate.aspx?idno=2361999&file_name=3

Three and four look identical to me. I''ve been told some white is good, too. So I can''t tell which is better, based on these images.

Even though Number 1 was booted, here''s the image of it: http://www.whiteflash.com/diamonds/certificate.aspx?idno=1180496&file_name=3

 

[JulieN]

1 2
3 4

 

[mightytower]

Number 2 has the darkest triangle areas in between the longer rays shooting out from the center. Does that mean it has the best cut? Am I looking for more white, more dark, or more defined image patterns?

 

[JulieN]

sorry, made a mistake

 

[mightytower]

Number three looks so clear, like stained glass. Is that a good thing?

 

[Dancing Fire]

Julie
3 and 4 looks like the same IS.

 

[belle]

any of those are going to be amazing. you would not be able to tell them apart in normal lighting conditions. best of luck in your decision! you won''t be disappointed in whichever you choose.

 

[KristyDarling]

Yup, I''ll agree with Belle. They will all be knockouts! In terms of light performance, only like 8 people in the world would be able to tell the three apart with the naked eye!

 

[Dancing Fire]

Date: 5/10/2006 7:56:56 PM
Author: Dancing Fire
Julie
3 and 4 looks like the same IS.

Julie
thanks for the IS edit

 

[mightytower]

Thanks for all your help, ladies. I appreciate it. I''m confident that I made a good choice based on the things I''ve learned from you kind people. Thank you so much!!

 

[JulieN]

ladies + Dancing Fire and Strm!

Don''t forget to post pics in SMTR.

 

[aljdewey]

Date: 5/10/2006 6:53:11 PM
Author: KristyDarling

Date: 5/10/2006 6:46:55 PM
Author: JulieN
KD, can you explain to me how you know #2 is the spreadiest?

The table percentage. (someone correct me if I'm wrong!)

Ok......

It's not the table. "Spread" is the diameter of the stone (edge to edge) relative to its weight.

Poorly cut 1 ct. stones often only have a diameter of 6.2-6.3mm. Well cut 1 ct. stones have a diameter of approximately. 6.5mm.

In both cases, the stone weighs 1 ct., but the well-cut one has better spread (diameter) for the weight.