Princess experts needed!!!!!

[jarbatz]

I have checked the AGA Princess Cut chart against the below specs and they all fall into the Ideal or Premium cut ranges. Table is at the high end of the range - how does that affect the overall performance of the diamond? I also dont know crown height - what impact can that have?

And there are no ISET images posted on the site...are most online vendors able to offer that?

Carat: 0.78
Color: F
Clarity: VS2
Cut: IDEAL
Shape: Princess
Depth %: 69.1
Table %: 71
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Measurements: 5.26*5.14*3.55
Length To Width Ratio: 1.02

 

[Lorelei]

Date: 4/23/2008 5:12:56 PM
Author:jarbatz
I have checked the AGA Princess Cut chart against the below specs and they all fall into the Ideal or Premium cut ranges. Table is at the high end of the range - how does that affect the overall performance of the diamond? I also dont know crown height - what impact can that have?

And there are no ISET images posted on the site...are most online vendors able to offer that?

Carat: 0.78
Color: F
Clarity: VS2
Cut: IDEAL
Shape: Princess
Depth %: 69.1
Table %: 71
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Measurements: 5.26*5.14*3.55
Length To Width Ratio: 1.02

I am not an expert, but I will help where I can. Some believe a greater crown height can contribute to more fire in a diamond if the lighting is right, but one of our experts recently said it isn't as cut and dried as that unfortunately. I would certainly ask the vendor for an ASET image and detailed photos of the diamond, as the numbers really can't tell you much. Some vendors will be able to offer that service, or arrange it if you request it.

 

[chrono]

Crown height is important if you want the princess stone to sparkle and not look flat. A picture is also very important. Most of the vendors who advertise on PS will be able to provide you with an ASET and magnified picture of the stone. I would not buy a fancy cut without at least seeing a picture of it. ASET is also much preferred.

 

[jarbatz]

Ok I was able to find out the Crown Angle is 43.7 degree and 9.5%. This falls in the 1B category but then would seem to fall in all the other classes below 1B too (on the AGA chart for princess cut) so I''m confused if this is good, fair or terrible?? I have requested pictures and ASET images. I believe you can view the diamond online so that is my next step.

 

[DiamondExpert]

The ASET and image of the stone will tell you more about answering the questions you''re asking.

Ideally (pun intended), you could consider an AGS graded stone, which will give you a light performance grade, but in the final analysis, your eyes should make the final decision.

Good luck!

 

[Rhino]

Date: 4/23/2008 5:12:56 PM
Author:jarbatz
I have checked the AGA Princess Cut chart against the below specs and they all fall into the Ideal or Premium cut ranges. Table is at the high end of the range - how does that affect the overall performance of the diamond? I also dont know crown height - what impact can that have?

And there are no ISET images posted on the site...are most online vendors able to offer that?

Carat: 0.78
Color: F
Clarity: VS2
Cut: IDEAL
Shape: Princess
Depth %: 69.1
Table %: 71
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Measurements: 5.26*5.14*3.55
Length To Width Ratio: 1.02

Just for starters this diamond is being misrepresented. There is nothing about it that is "IDEAL" and the table and total depth percentage does not look promising either. Companies that mispresent their products as something they are not is a strike.

Also something to bear in mind is that the AGA charts are proportion based and not light performance based. It is decent some of the times but certainly not all of the time.

Knowing crown height isn''t bad to know but not knowing what pavilion depth and more importantly the 2 pavilion angles measured on the diamond that accompany that crown are more important. As suggested by the other posters an ASET image would tell a whole lot more. When AGS suggested gathering numbers to estimate light performance in princess cuts no less than 2 sets of crown angles and 2 sets of pavilion angles needed to be acquired to make any kind of educated assessment based on numbers.

Peace,

 

[jarbatz]

Date: 4/23/2008 9:37:08 PM
Author: Rhino

Date: 4/23/2008 5:12:56 PM
Author:jarbatz
I have checked the AGA Princess Cut chart against the below specs and they all fall into the Ideal or Premium cut ranges. Table is at the high end of the range - how does that affect the overall performance of the diamond? I also dont know crown height - what impact can that have?

And there are no ISET images posted on the site...are most online vendors able to offer that?

Carat: 0.78
Color: F
Clarity: VS2
Cut: IDEAL
Shape: Princess
Depth %: 69.1
Table %: 71
Polish: Very Good
Symmetry: Very Good
Fluorescence: None
Measurements: 5.26*5.14*3.55
Length To Width Ratio: 1.02

Just for starters this diamond is being misrepresented. There is nothing about it that is ''IDEAL'' and the table and total depth percentage does not look promising either. Companies that mispresent their products as something they are not is a strike.

Also something to bear in mind is that the AGA charts are proportion based and not light performance based. It is decent some of the times but certainly not all of the time.

Knowing crown height isn''t bad to know but not knowing what pavilion depth and more importantly the 2 pavilion angles measured on the diamond that accompany that crown are more important. As suggested by the other posters an ASET image would tell a whole lot more. When AGS suggested gathering numbers to estimate light performance in princess cuts no less than 2 sets of crown angles and 2 sets of pavilion angles needed to be acquired to make any kind of educated assessment based on numbers.

Peace,

Thanks Rhino! Once I have the ASET image, what am I looking for?

 

[Lorelei]

Here is a thread on how to interpret ASET images here, in case Jon can't pop back.

https://www.pricescope.com/community/threads/why-we-prefer-aset-to-ideal-scope-with-fancy-shapes.73949/

Also here is some info from Jon's very informative educational section of his website, which was written by the man himself.

http://www.goodoldgold.com/Technologies/ReflectorTechnologies/TheVariousReflectorsontheMarketToday/

 

[jarbatz]

Ok here is the magnified picture they sent me - is it me or do it look dull? They also have told me they are not able to provide an ASET image. I am going to view it live online tomorrow. i hope this works....

 

[jarbatz]

This might be a smaller version...tried to resize it.

 

[Lorelei]

It looks promising to me, see what you think when you get the online demo. Also just for your peace of mind, make sure the vendor has a good return policy in case you decide against this stone if you get it.

 

[Ellen]

Date: 4/24/2008 1:35:14 PM
Author: Lorelei
It looks promising to me, see what you think when you get the online demo. Also just for your peace of mind, make sure the vendor has a good return policy in case you decide against this stone if you get it.

Ditto. Looks very pretty so far!

 

[Rhino]

Hi jarbatz,

Photography taken with a bright white background coupled with white light from above is the worst lighting to try and determine light leakage vs light return and where this diamond is grabbing its light from.

In a nutshell ASET critically shows where the diamond is drawing its reflections from.

Green = off the horizon

Red/Pink = from above

Blue = head/body shadow

/

depending upon how much of it is in the stone. Too much is not good because your head and body are poor sources of illumination and too little ... not enough contrast.

Peace,

 

[JulieN]

is this from DScaasi? They have Ideal Scope, I think.

 

[baubleman]

Jarbatz-

I can be of some assistance, as I have many emails and a whole folder of info on this very subject! Get back to me and let me know if you need help

B Man

 

[jarbatz]

JulieN - yes this is from dscaasi. I will ask them for idealscope.

Baubleman - I would LOVE some assistance on this!!!