Any thoughts on these Measurements for a Princess or Radiant

[gspiteri]

Any thoughts on these two diamonds? They both looked beautiful, reflected light amazingly and the price seems right. These are from a diamond dealer in chicago right down the street from me. All input is appreciated.

Princess ($7800)

Table size: 74 %
Crown Height: 12.3 %
Pavilion angle: 55 °
Report: EGL
Shape: Princess
Carat: 1.51
Color: E
Clarity: SI2
Depth: 71.5
Girdle: 3.2%
Polish: Excellent
Symmetry: Very Good
Culet: None
Fluorescence: No
Measurements: 6.26-6.24X4.46 mm
Length/Width: 1.00

Radiant ($8200)
Table size: 64 %
Crown Height: 11.6 %
Pavilion angle: 50.7 °
Report: GIA
Shape: Radiant
Carat: 1.52
Color: G
Clarity: SI1
Depth: 66.6
Girdle: 2.1%
Polish: Excellent
Symmetry: Very Good
Culet: None
Fluorescence: No
Measurements: 6.60-6.58X4.38 mm
Length/Width: 1.00

 

[Garry H (Cut Nut)]

The deafening silence tells you no one knows

I can say there are no 75% table 55 pavilion angle nice combinations for princess that i know of.

 

[Paul-Antwerp]

Because of Garry''s comment, I realised that I could say something about the princess-cut.

Of course, the data available are insufficient to give a complete idea, but from these data, I can deduct that the best possible AGS-grade for this princess-cut will be around AGS-6.

That brings me to the EGL-cert. Is this EGL-USA or another branch of EGL. EGL-USA is regarded as being pretty reliable, whereas the other EGL-branches have a ''not-so-good'' reputation. Also, when considering the SI2, did you check whether the stone is eye-clean?

Live long,

 

[valeria101]

I do not know how to predict brilliance and looks from those numbers.... and SI clarity should be seen no matter which lab graded it. Perhaps SI1 has better chances to look clean than SI2, but you never know.

This is not the same as saying the data is useless, of course. There's enough to put the AGS standard to use for either stone, as I am sure you have done already.

Otherwise, Sarin reports are useful for rounds because the numbers can be interpreted by the HCA. There is no equivalent of that for fancy cuts. Perhaps you could spend a couple' hours playing with the GemAdviser or similar software (which is not free, btw.) and end up with an eductaed prediction of what those proportions might look like. Without all the numbers of a 3D scan, there's allot of guesswork left, and you should end up with a rather wide range of preditions, even after lots of work.

Seeing the stones makes all that redundant

If you do have a chance to see some very brilliant ones for compar
ison or use one of those 'scopes (BrillianceScope, Ideal Scope... whatever) those help rank diamonds relative to the best brilliance achievable for each cut. That helps if you do not have a perfectly cut example at hand to learn what to look for in others by comparison.

Oh well... hope this makes some sense.

 

[RADIANTMAN]

The radiant measurements look great. While I can''t be certain about the stone without seeing it, I''m confident, based on your description, that the stone is beautiful. Trust your eyes.

With respect to the princess, the stone looks a little small for the carat weight, but with respect to the brilliance, my advice is the same as with the radiant. You''ve seen it and have told us that the brilliance is outstanding. I am more inclined to trust what you''ve actually seen than someone else''s guess (including my own).

 

[gspiteri]

Thanks everyone...I have another Princess Diamond that a different Jewler showed me. She is getting the Sarin Report for me, but here are the initial specs from the GIA report. The initial price she mentioned was $6500

Meas: 5.90 x 5.80 x 4.58
Weight: 1.33 carat
Depth: 79 %
Table: 63 %
Girdle: ETN THK
Culet: None
Polish: VG
Sym: Good
Color: F
Clarity: SI2
Flour: None

Again, this diamond looked great too. However, I am stuck in the world of why pay for wasted weight (Depth seems a little high).

Gary - Thanks for the feedback...So in general I should be looking for a smaller table and less of an angle on the pavillion? That seems to make sene to me. Also, I''m wondering if I Should get the Ideal Scope and start testing all the rocks I view with it? And if I do should I spend the 25$ or 99$ and get the lighting tray. The tray seems like a nice thing to have. What is your experience with Ideal Scope Beginner, Expert and Light & Scope tools.

Paul - where can I find the AGS cut grade chart? All I have looked at is the AGA Cut Grade Chart and rules http://www.gemappraisers.com/chartFrameset.htm. With this cut grade chart, if the diamond has characteristics from different cut grade ranges how do you determine what cut grade to assign to the diamond. For instance, on the above diamond the table falls into the 1A range but girdle thickness does not. How do I determine the grade?

To determine if the stone is eye clean it should not have any black spots or inclusions to the naked eye, correct? Is there another mechanism?

I have pretty much ruled out the first princess cut diamond, but I will look at the EGL report and see if it is from the USA branch.

Ana - I understand that ultimately it will come down to what I see, but I am still hesitant because I don''t want to pay for wasted weight Please let me know If I am being crazy.

Stan - I liked the radiant a lot, however my only hesitation with the radiant is that it''s a little softer than princess. To me that translates into less brilliant. Not sure if my assumption is accurate.

Thanks to everyone who responded and I hope that I am not being long winded or have unrealistic expectations.

I appreciate all your input, Gio

 

[bennyboy96]

I did a search on PS Radiants and found out that this Chicago jeweler is giving you a darn good deal. That stone is listing for $8,000 - 8,500 through PS online vendors, so $8,200 from a local jeweler is a great deal!

 

[RADIANTMAN]

Gspiteri:

Radiants and princesses, if they are both cut "correctly," reflect light quite a bit differently. Princesses have what I call linear life - alternating black and white lines generating excellent contrast. Radiants have more circular life - resulting in a very different look. While I, personally, am obviously biased toward radiants, you should go with whatever looks best to you.

 

[Garry H (Cut Nut)]

I agree with Stan - you can not compare them easily - if you like one over the other then go for it.

you buy the IS on-line here www.ideal-scope.com and Dave Atlas will ship it to you pronoto.