what do you think of this diamond?

[lostinround]

What do you guys think of this stone?
3.25 H / SI1 / sarin cut 1 / depth 61.9% / table 57% / crown angle 34.5 / pavilion angle 41 / medium to slightly thick girdle/ no culet or flourescence / EGL cert/ the jeweler had a sarin on site and and that''s how I got the crown and pavilion angles stated.

I read something about the 61% depth rule - supposudely a stone should have a depth less than 61% to be of a an ideal cut?

Thanks again

PS I forgot to say concerning the stone it is eyeclean , HCA 1.9, cost 27500

 

[Lorelei]

Date: 9/8/2006 5:27:29 AM
Author:lostinround

What do you guys think of this stone?
3.25 H / SI1 / sarin cut 1 / depth 61.9% / table 57% / crown angle 34.5 / pavilion angle 41 / medium to slightly thick girdle/ no culet or flourescence / EGL cert/ the jeweler had a sarin on site and and that''s how I got the crown and pavilion angles stated.

I read something about the 61% depth rule - supposudely a stone should have a depth less than 61% to be of a an ideal cut?

Thanks again

PS I forgot to say concerning the stone it is eyeclean , HCA 1.9, cost 27500

Not necessarily. You don''t want too shallow or too deep, but the depth you mention is ok to me, a little deeper than I would prefer but that is my preference.

This diamond might look great, my main concern is the cert as it is an EGL. EGL USA? Which EGL division is it? If you want to pursue this diamond, for sure spend out another $150 or so and get an independant appraisal during the return period to make sure it checks out. A GIA graded diamond will cost more but the grading is said to be more accurate.

 

[Regular Guy]

Good advice, Lorelei.

 

[diamondseeker2006]

Goodness, no, 61.9 is fine! Up to 62.3 is acceptable for ideal. I do try to stay at 62.0 and above, so your stone is fine. The stone sounds very nice and how great that you were able to get a Sarin on it! Did you see it? Let your eyes tell you if it's outstanding! (And get the independent appraisal as well on a stone that expensive with an EGL cert to be sure the color and clarity grades are correct.)

 

[lostinround]

Thank you, I had the same concern because of it''s EGL cert - it is EGL USA - but from what I have seen around EGL seem to be more leniant in its grading than GIA or AGS. I did feel somewhat comforted in that the jeweler showed me a GIA of the same color and it seemed comparable. Again I donot have a trained eye so it could be that I just didn''t appreciate the difference.

A point that does concern me and I would appreciate your advice is that although its symmetry is excellent and it is supposedly a " hearts and arrows" diamond for whatever that''s worth, the polish is only greaded as "good". I didn''t see any milkiness to the stone and it seemed to sparkle but I end to think all diamonds sparkle which is why I look at the numbers and HCA score quite abit - WHAT DO YOU THINK ABOUT THE POLISH? DOES THAT MAKE IT OF MUCH LOWER VALUE?

what do you think of the price - is it fair?

Another thing that encouraged me about the jeweler himself is that he offers a 100% exchange policy anytime and an 80% buyback at anytime.

I definitely do plan on sending it to an apraiser - should it be some one in my area or just anywhere? do you have any reccommendations on trusted appraisers?

Thanks alot for your help and advice

 

[diamondseeker2006]

I don''t know. They usually recommend very good or above on polish around here. We could use a gemologist to chime in on that question!

 

[Lorelei]

Thanks Ira

One of our regular posters put it beautifully a while ago regarding polish and symmetry...A top cut diamond will automatically have these details taken care of. Many want only ID ID or EX EX with both, so for the polish to be good isn't a deal breaker for me personally - good and above are said to look the same to the untrained eye with polish and symmetry anway. I would be more concerned if you are wanting a H&A diamond that this one is a true H&A cut...These diamonds have to fit many strict criteria to meet this standard, so if you are wanting a true H&A diamond, proceed with caution on that score. That it is EGL USA graded is a plus in my book, but still get that appraisal. Unless the polish of a diamond is very poor, you won't see it cause milkiness to the diamond, inclusions or a contaminent would do that. Good polish I wouldn't expect you to notice anything , it is the finishing of the cut gemstone. What do your eyes tell you with this diamond? Do you love it?

With that aside, if you are looking for a big rock at a good price, I wouldn't let the details with the polish worry me too much and if you aren't that worried about a true H&A as this may or may not be. It looks to have a good cut, although not a superduperlouper as we see frequently - but very nice all the same! If it looks great to you, get that appraisal! Let us know how you get on, we like big rocks round here...

Here is some info for you to read up on Hearts and Arrows.
http://www.pricescope.com/hearts_indx.asp

Try this page to find an appraiser in your area.
http://www.pricescope.com/appr_list.aspx

With an appraiser, you want someone who is totally independant to give you an unbiased opinion. Use the search function to find one in your area, alternatively if you post which area you are in, you might get some recommendations.

 

[Giangi]

Hmmm...I suppose EGL USA grades polish and symmetry differently from GIA and AGS. If you take a look at the grading survey, you''ll see that some GIA/AGS EX-ID got just good/good from EGL.

 

[Rhino]

Good morning,

The 61% depth "rule" actually originates with Fred Cuellar and has no sound basis in fact. Many have tried to extract how and why he came up with that rule with no clear answers that I am aware of. The general answers that have been given which I''ve heard have been along the lines of "there is a mathematical formula that proves it... etc. etc. etc." No light measuring technologies or observation testing that I am aware of confirm the claim and some of the most beautiful diamonds in the world have depths over 61%. GIA and AGS (perhaps 2 of the more conservative labs) have the depth cut off at around 63% and both labs grade for light performance.

Regards,