Please help me rate my diamond

[meldsa]

I was wondering if I could get people's opinions on this diamond. Unfortunately I have no pictures to share, but here are the statistics.
GIA certified
Round Brilliant
Measurements: 7.00 - 7.04 x 4.22 mm
Carat Weight: 1.24
Color Grade: F
Clarity Grade: SI1 ( Only one inclusion that I could see under 10X magnification that is easily covered up with a prong)
Cut Grade: Very Good

Proportions:
Depth: 60.1%
Table: 58%
Crown Angle: 32.5 degrees
Crown Height: 13.5%
Pavilion Angle: 41.2 degrees
Pavilion Depth: 43.5%
Lower Half: 75%
Girdle: Thin to Medium, Faceted
Culet: None

Finish:
Polish: Good
Symmetry: Very Good
Fluorescence: None

Plugging these numbers into the Holloway Cut Advisor gives me:
Light Return: Very Good
Fire: Excellent
Scintillation: Very Good
Spread: Excellent

Total Visual Performance: 1.8-Excellent ( Within TIC Range )
I saw this diamond in person and it looked fine to me. The thing is that I have been reading on these forums that a polish of good is not advisable, which is what this diamond is. This diamond is also going to be mounted on a platinum eternity band. Any thoughts or suggestions? Thanks so much!

 

[meldsa]

This is what the engagement ring would look like. That is NOT the diamond in the picture...just a plain ol'' CZ.

 

[meldsa]

Also if I were the get an idealscope image for this diamond and it turn out to be good...does the polish have any bearing on the look of the diamond? Thanks!

 

[meldsa]

Any advice or help please?????

 

[Sparkalicious]

Hi Meldsa! Welcome!

I think that the carat size & the color/clarity combo is fantastic! This looks good.

As far as the other specs are concerned, I think that you can likely do better than this diamond. For example, the cut grade is showing as "very good" ... Given that cut is the most important component contributing the light performance of your diamond my personal preference would be to go with either an "excellent" or "ideal" cut diamond as opposed to just "very good" ... The performance or "sparkliness" or your diamond should increase noticeably given a better cut. As is, the diamond seems to be a bit shallow in the crown, thus the table is a little bit wider ... this may cause some light leakage and thus may cause this diamond to not be as sparkly as others. It may have a more "glassy" effect sort of like that of an emerald cut, for example.

For myself as well, I chose to stick to Excellent for both polish and symmetry. A diamond''s beauty has a lot to do with visual perception, thus if the symmetry is not great, the diamond will not exhibit the traits that we all find beautiful about diamonds as well as a diamond with better symmetry would. Same goes for polish.

This is just my opinion based on my personal preferences and what I have learned about diamonds. If you would like to know more about diamonds and determine your own set of criteria or standards for your purchase, you may want to review the PS Advanced Tutorial listed under the "knowledge" tab at the top of this page. It is really quite informative.

If you wanted to look online for stellar example of diamonds that are well cut, you may want to check out Whiteflash.com and their A Cut Above diamonds and compare them to what you have presently.

Good luck on your search!

 

[Lorelei]

Welcome!

It depends on what you are looking for, if you have seen this diamond, have compared it to others of similar and tighter cut and love it, then that is the main thing. If you want a superideal diamond that has top notch light performance and sparkle, then you could find one which has been cut more finely, however if you want a pretty diamond of a ' nice make' then this may fit the bill. Also Spark, it is said that polish of good and above cannot be distinguished between by the naked untrained eye, according to some experts, I hope you don't mind me mentioning that. The table is actually fine and won't cause a glassy effect or light leakage in the round diamond in itself, it is slightly out of tight ideal range we normally see here, but in the non Pricescope world for a nicely cut diamond, it isn't a problem, it depends on what the original poster is after.

 

[Ellen]

Date: 1/28/2008 5:28:43 AM
Author: Lorelei
Welcome!

It depends on what you are looking for, if you have seen this diamond, have compared it to others of similar and tighter cut and love it, then that is the main thing. If you want a superideal diamond that has top notch light performance and sparkle, then you could find one which has been cut more finely, however if you want a pretty diamond of a '' nice make'' then this may fit the bill. Also Spark, it is said that polish of good and above cannot be distinguished between by the naked untrained eye, according to some experts, I hope you don''t mind me mentioning that. The table is actually fine and won''t cause a glassy effect or light leakage in the round diamond in itself, it is slightly out of tight ideal range we normally see here, but in the non Pricescope world for a nicely cut diamond, it isn''t a problem, it depends on what the original poster is after.

Ditto on all.

 

[Sparkalicious]

Date: 1/28/2008 5:28:43 AM
Author: Lorelei
Also Spark, it is said that polish of good and above cannot be distinguished between by the naked untrained eye, according to some experts, I hope you don''t mind me mentioning that. The table is actually fine and won''t cause a glassy effect or light leakage in the round diamond in itself, it is slightly out of tight ideal range we normally see here, but in the non Pricescope world for a nicely cut diamond, it isn''t a problem, it depends on what the original poster is after.

Nope ... no problem, Lorelei.

I''m glad you did post to clarify since there are so many varying perspectives. What I stated was mine.

Meldsa, as Lorelei stated, if this diamond is the one you have seen and are in love with, it is a nice diamond and you should go for it.

If you are unsure about this diamond and are still in pursuit of your "perfect" diamond, my feeling is that there may be another one out there for you.

I hope that this helps and that any of the info in the tutorials is informative for you too.

 

[meldsa]

Thanks so much for the info guys. I was getting a little worried that nobody had responded to my original post Would somebody be able to clarify to me what the ideal cut range should be? I can''t seem to find something specifically relating to it in the advanced knowledge section. Once again, thanks so much for the informative replies.

 

[Lorelei]

Date: 1/28/2008 9:29:03 AM
Author: Sparkalicious

Date: 1/28/2008 5:28:43 AM
Author: Lorelei
Also Spark, it is said that polish of good and above cannot be distinguished between by the naked untrained eye, according to some experts, I hope you don't mind me mentioning that. The table is actually fine and won't cause a glassy effect or light leakage in the round diamond in itself, it is slightly out of tight ideal range we normally see here, but in the non Pricescope world for a nicely cut diamond, it isn't a problem, it depends on what the original poster is after.

Nope ... no problem, Lorelei.

I'm glad you did post to clarify since there are so many varying perspectives. What I stated was mine.

Meldsa, as Lorelei stated, if this diamond is the one you have seen and are in love with, it is a nice diamond and you should go for it.

If you are unsure about this diamond and are still in pursuit of your 'perfect' diamond, my feeling is that there may be another one out there for you.

I hope that this helps and that any of the info in the tutorials is informative for you too.

Sparks, I hope you don't mind me mentioning this, but the points I made are actually facts I have learned in my time here, and that a 58% table, although very slightly larger than we often see here, is actually not considered to be a large table for a round diamond, or if everything else is right, cause light leakage, or make the diamond look glassy. I also have a diamond with a 58% table and it is stunning performance wise. Also with the polish, some of the experts have said that good and above look the same to the naked untrained eye and that the average person wouldn't be likely to tell the difference between that or VG, excellent etc. However with a superideal type of diamond, you are more likely to find excellent and above and that buyers of these diamonds will insist on at least excellent for polish and symmetry.

 

[EricaR]

Why don''t you use the Pricescope search tool, making sure to click the "ASG0" box. That will find ideal cut stones for you to look through.

 

[Lorelei]

Date: 1/28/2008 10:45:47 AM
Author: meldsa
Thanks so much for the info guys. I was getting a little worried that nobody had responded to my original post Would somebody be able to clarify to me what the ideal cut range should be? I can't seem to find something specifically relating to it in the advanced knowledge section. Once again, thanks so much for the informative replies.

It really depends on what you want Meldsa, if you want a very tightly cut and crafted superideal cut diamond, then Erica's suggestion is a good one with the search tool. You can confine your search to AGS0 and GIA Ex cut grade diamonds, as these are the top tier cut gradings, and that will narrow your search considerably if you want a cream of the crop cut. Or if you just want a nicely cut diamond that sparkles and looks lovely, then what we call a ' nice make' of diamond, such as the one you have mentioned, may be a good choice.

Some Pricescopers use this range of proportions to find a well cut diamond ( these figures may vary, but will give you a point of reference.)

depth - 60 / 62% ( My personal cutoff is around 62.6)
table - 54 - 57/ 58%
crown angle - 34 / 35 degrees
pavillion angle - 40.5 - 40.9/ 41 degrees

As you may see with the first diamond you posted, the crown and pav angles may be complimentary to each other outside of these ranges, the HCA can help with this. Once you have found your contenders, then an Idealscope image is very useful as the next step in narrowing your selections. But decide what you truly want from your diamond, superideal or non superideal well cut, then see what is available within that criteria.

 

[JohnQuixote]

Date: 1/28/2008 10:45:47 AM
Author: meldsa
Thanks so much for the info guys. I was getting a little worried that nobody had responded to my original post Would somebody be able to clarify to me what the ideal cut range should be? I can''t seem to find something specifically relating to it in the advanced knowledge section. Once again, thanks so much for the informative replies.

GIA doesn''t give an Ideal grade; their top grade is Excellent. This diamond would have earned that if the polish had been VG instead of just Good (its proportions fall within EX, as long as the star% is in-line - I did not see that info in the original post).

Regarding ''Ideal'' as an AGS grade: There is no such thing as an ''ideal cut range'' anymore (for instance, tables used to be limted to 53-57% but that is no longer the case). Now each diamond must be analyzed at the lab to see how all 57 facets work together. As it relates to this diamond we can anticipate that its finish grades would be in-line with GIA. As for light performance, the basic proportions fall on the border of AGS0 and AGS1 per the cut guideliness, so it would likely be a top diamond in their metric too.

The crown angle/crown height are on the low side of near-Tolkowsky so it is probably a very bright stone.

 

[JohnQuixote]

Date: 1/28/2008 11:28:51 AM
Author: Lorelei

Some Pricescopers use this range of proportions to find a well cut diamond ( these figures may vary, but will give you a point of reference.)

depth - 60 / 62% ( My personal cutoff is around 62.6)
table - 54 - 57/ 58%
crown angle - 34 / 35 degrees
pavillion angle - 40.5 - 40.9/ 41 degrees

For sake of thoroughness I''d add that crown and pavilion angles have an inverse relationship M''Lady.

Example: 41/34 (hi - low) and 40.6/35 (low - hi) are both pretty robust in broad terms, but 41/35 (hi - hi) and 40.6/34 (low - low) would both bear further examination in my book, although they fall inside the parameters you gave.

This goes to the heart of why AGS stopped using static ranges: By incorporating give & take (not just in c/p angles, but with all combinations) the system became far more flexible and diamond-specific.

That said, I respect the blue of it all.

 

[Lorelei]

Good explanation my most esteemed Sir John, and I should have added that in my post, so thank you for jumping in and clarifying!

Some other PSers also use this range to give other posters some idea of numbers, so perhaps we ought to make sure that we advise further evaluation may be needed with some ends of the scale such as the 35/ 41 and 34/ 40.6 crown / pavillion combo.

 

[meldsa]

Thanks for all the advice guys. I''m having the diamond shipped back to me to take a look at it under the ideal-scope and to verify that I like the way the diamond looks. I will keep you guys updated.

 

[Lorelei]

Best of luck with that and let us know how you get on