shape
carat
color
clarity

round brilliant diamond proportions

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cstj1

Rough_Rock
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Jun 28, 2008
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Can someone tell us what type of cut this ring has? We do not have angle of pavillion or table, just the %. Can this be determined without these measurements?



weight 2.03 carat
measurements 7.84-7.80x5.08 mm

proportions



depth 65%
table 57%
crown 16.9%
pavillion 42.2%
girdle- sl thick to thick
cutlet none
polish and symetry- both very good
flourescence: faint
clairty - si3- the inclusions are more like feathers around the edge- on small feather inclusion in the center
Color- G Color

EGL certificate



I am concerned that the depth percentage is outside of the proportions. the crown slightly above, I was reading that the depth % should not exceed 62.9% and the crown 16%. The diamond is very pretty and appears eye clean. It is very sparkly in the light.
We sacraficed the clarity grade for color since it was difficult to see inclusions.

Thanks for the help!



CSTJ

 
Just reposting to this thread my response from the other thread.


Yes, the diamond has some extra depth, and as a result of that and also the girdle probably, it appears that your diamond is facing up more like a 1.75 carat, rather than a 2 ct, so it looks small for it's weight. The crown and pavilion angles appear to work together and that it certainly could be a pretty stone, do you intend to keep it, or would you prefer to find another? Personally I would want a diamond which didn't hide weight, a 2 ct round should have the diameter of about 8.2 mm thereabouts.


Also do you know which EGL lab graded this diamond? It is said that some EGL labs may vary in accuracy, so do you know if it is EGL USA. Israel, Antwerp, Turkey or other? Also what are the colour and clarity of this diamond?

Ok, it is a G colour and EGL USA graded, do you have the clarity please? We will need that to check out prices, also did you buy it from an online vendor, or a brick and mortar jeweller?




 
Yes, you can get the angles from the height %s. While the numbers are a bit unorthodox, the combo appears to work. You should definitely be getting a good discount, because of the loss of face-up spread.
 
hi there,
I included all the info in my previous post so hopefully everything you need.
This would be from a diamond wholesaler.
clarity si3- explained in previous post as to the detail and G color
36.gif

Again, appreciate the help!
 
Date: 6/28/2008 1:27:47 PM
Author: cstj1
hi there,
I included all the info in my previous post so hopefully everything you need.
This would be from a diamond wholesaler.
clarity si3- explained in previous post as to the detail and G color
36.gif

Again, appreciate the help!
Oops! Missed the SI3 part, teach me to read more carefully! Ok, SI3 is a term used by EGL only, GIA and other labs don't use it but go from SI2 to I1 usually. It is said that EGL use the SI3 clarity grade to describe their ' better' I1's, how much did you pay for the diamond? Also it may look smaller for it's weight as previously explained, so that could make a difference to the price also. Regarding a diamond wholesaler, a wholesaler doesn't sell to the public - even if these type of sellers use that term, they are actually retailers if they are selling to the public.
 
about 13k total 15k with a beautiful pave 1.0 carot setting.
 
Date: 6/28/2008 12:29:28 PM
Author:cstj1

Can someone tell us what type of cut this ring has? We do not have angle of pavillion or table, just the %. Can this be determined without these measurements?




weight 2.03 carat
measurements 7.84-7.80x5.08 mm
diameter too small for a 2.03 ct. should be more like 8.10mm.
 
Date: 6/29/2008 2:45:41 AM
Author: Dancing Fire

Date: 6/28/2008 12:29:28 PM
Author:cstj1


Can someone tell us what type of cut this ring has? We do not have angle of pavillion or table, just the %. Can this be determined without these measurements?





weight 2.03 carat
measurements 7.84-7.80x5.08 mm
diameter too small for a 2.03 ct. should be more like 8.10mm.
Ditto - why pay for weight that you are not seeing? You are paying a big premium to hit the 2ct mark, yet it will look smaller. I would pass, I think you can do better sorry.
 
I take it you have already purchased this diamond and ring and don't want to return it? The price is high, I ran a search for similar diamonds and even allowing for the setting, also as I said previously, the diamond appears to be facing up small for it's weight, but if you love it that is the main thing.
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thanks all for the help, i did purchase it, but i will speak to them this week and see if we can exchange the diamond. I love the setting and will keep it.
hopefully they will work with us. the owner is a cousin of someone i know.
the thing that gets me is she told us a couple of times that it looks like a 2.0 carrot and not any smaller like some other diamonds. who can you trust these days, ugh!!
 
35.gif
One more thing... can you tell me what dimensions, etc I should look for when I exchange for a similar size ring. dont want to make another mistake. Also, I would like to stay under 15k
 
thanks again.. the reports they provide do not show the angles of the crown and pavillion only % , how can I figure out the angles from this info? Also, is there a place I can print out the chart guide - that was awesome! I am going to be armed with info when I go back!!
 
Easiest to use HCA to figure out the angles from the %s. Got a smart phone? Or buy an Ideal Scope and learn how to use it.

Sorry, hate to say, but 13K sounds like a bad deal to me. Prices just plummet once you get beyond SI2.
 
Date: 6/29/2008 12:38:39 PM
Author: cstj1
thanks again.. the reports they provide do not show the angles of the crown and pavillion only % , how can I figure out the angles from this info? Also, is there a place I can print out the chart guide - that was awesome! I am going to be armed with info when I go back!!


Use these numbers from the linked thread, should make it easier for you.

depth - 60 - 62% - although my personal preference is to allow up to 62.4%
table - 54- 57%
crown angle - 34- 35 degrees
pavilion angle - 40.6- 41 degrees
girdle - avoid extremes, look for thin to slightly thick, thin to medium etc
polish and symmetry - very good and above

note - with crown and pavilion angles at the shallower ends ( CA 34- PA 40.6) and steeper ( CA 35- PA 41) check to make sure these angles complement in that particular diamond - eyeballs, Idealscope, trusted vendor input - check as appropriate!.

I take it you will be returning this diamond/ ring then?
 
Hi There,

Thanks again! I am so happy to have found your site. I called the Jeweler this morning and she was very nice and said I could absolutely exchange the diamond. She will call me back with some other diamonds for consideration and I am going to ask for the dimensions from her and then post back on the site for your opinon. Wish me luck. I am going to try to get something better for the same price as I do think she priced this one high.
Thanks for all of your help. You are a life saver!
36.gif
 
Date: 6/30/2008 12:56:59 PM
Author: cstj1
Hi There,

Thanks again! I am so happy to have found your site. I called the Jeweler this morning and she was very nice and said I could absolutely exchange the diamond. She will call me back with some other diamonds for consideration and I am going to ask for the dimensions from her and then post back on the site for your opinon. Wish me luck. I am going to try to get something better for the same price as I do think she priced this one high.
Thanks for all of your help. You are a life saver!
36.gif
Oh that is great news! Please do go ahead and post the proportions of the diamonds you are considering, and we will be delighted to help you further!

Have your jeweller look for some AGS0 cut grade, and GIA Excellent cut grade also, that will make it easier to find a lovely diamond. Also we will need this info when you post your new contenders -

depth %
table %
crown angle
pavilion angle
girdle thickness
polish
symmetry
diameter measurement.
 
Ok thanks. I think they only have EGL USA certificates, but I will check. These do not provide the angle measurements.
 
Date: 6/30/2008 1:08:49 PM
Author: cstj1
Ok thanks. I think they only have EGL USA certificates, but I will check. These do not provide the angle measurements.
Yes, EGL use percents, but we can still work with those. You could ask your jeweller if she has access to a Sarin machine. Angles are considered to be more accurate and a Sarin gives detailed measurements of a diamond, but if not no worries, we will still be able to help you find a lovely diamond!
 
Charts for rounds and nearly all fancy shapes may be located on this page:
http://www.gemappraisers.com/oldcutgraderules.asp

There are no AGA charts for cushions or Asscher cuts. Cushions have the widest set of varaible factors and Asschers just are always quite deeply cut with their own special "look" and appeal. You "can" use the oval chart for some cushion guidance on longish cushions and use the round chart for squarish ones. It might be helpful, but not nearly as good as for many of the other shapes.

These are charts I developed quite a number of years ago when AGA used to belong to me. While knowledge has greatly advanced since the early 90''s, they still have a great deal of validity and are still in wide use by many appraisers, diamond vendors and educational organizations.
 
Hi there,

Here is one for consideration. Not sure if the price is too much, seems so 18.600 for the diamond. If not, can you tell me a price I can try to negotiate?
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EGL USA certified

Vs2
I color
measurements 8.04x8.00x5.06
2.03 carats

depth % 63.1
Table % 55.0
crown 15.5%
Girdle thin-sl thick
cutlet- none
pavillion % 42.8
polish and symmetry both are Very Good
She said that this diamond has a heart and arrow?

thanks again!
 
Looks good on the HCA:

Light Return: Excellent
Fire: Excellent
Scintillation: Excellent
Spread or diameter for weight: Very Good
Total Visual Performance 0.6 - Excellent, within TIC range

So it warrants further examination. Have you seen it with your eyes and looked at it in lots of different lighting environments? Do you have an actual picture of it or an idealscope image?

The price is probably a little high for the carat wieght etc. GOG has a J SI2 for around $14 000, and I SI1 for around $17 000, and Whiteflash has an I SI1 for $19 900. All those examines are just over the 2 ct. mark. ETA just noticed it is a VS2! The price looks okay then but keep in mind that GIA or AGS may have graded it a little lower in color or clarity than EGL.
 
This diamond looks better, but personally I would prefer to see a bit less depth if possible, also some diamonds may show an arrow pattern, but it may not be a true example of this cutting style - I just mention this if having an undisputed hearts and arrow diamond appeals to you.
 
thanks all.. Do you think an I color is ok even if it may be graded lower ? Does the cut compensate for the color? I read that sometimes if the cut is good, then you can go lower on the color. Thanks for helping, this can all be a bit confusing.
 
Date: 6/30/2008 5:03:51 PM
Author: cstj1
thanks all.. Do you think an I color is ok even if it may be graded lower ? Does the cut compensate for the color? I read that sometimes if the cut is good, then you can go lower on the color. Thanks for helping, this can all be a bit confusing.
Yes, great cut will compensate for color when viewed from the top--all you will see is white light. In a stone that size, lets say at worst it is a "K" according to AGS, you may see some body color in the pavilion when viewed from the side but this may or may not bother you! It should appear somewhat creamy, it should not appear yellow at all. You''ll need to see it to judge if it is okay to you. I love a great K myself, so a J or and I is a no-brainer
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Date: 6/30/2008 4:24:57 PM
Author: Lorelei
This diamond looks better, but personally I would prefer to see a bit less depth if possible, also some diamonds may show an arrow pattern, but it may not be a true example of this cutting style - I just mention this if having an undisputed hearts and arrow diamond appeals to you.
Ditto, try looking for a stone with 60-62% depth and a 54-57% table and crown/pavillion percentages compatible with an HCA score less than 2.

An I stone certified by EGL might actually be closer to a J since they don''t grade as strictly, which isn''t a bad thing necessarily. However, it is something to keep in mind while doing price comparisons.
 


Hi,


Its me again. I am writing with some new round diamond dimensions that I would love to have advice for. I am going back to the jeweler and exchanging the diamond I purchased for this one. The price she is quoting is 17,300
If I could get some opinions by tomorrow morning that would be great as I am going to meet up with the Jeweler tomorrow to look at this diamond.
thank you as always for your help!

GIA CERT


2.0 Carat
SI1 clarity
I color
8.22x8.24x4.97
Dept % 60.4%
Table 56.0%
Pavillion 43.5%
Girdle: V think to med
Polish Excellent
Symmetry V good
Cutlet None
Flourescence: Strong Blue
Star lenth 55%


crown angle 32.5
Pavillion angle 41.2
Lower half 80%


Not sure about the Flourescence being strong blue? I was told this is good to have in a lower color.
Sounds like a nice stone and it should be for the price... ? Would I be paying too much and do you think this is a good option ?
Thanks for all of your help and advice!

Also the settting is a G color in a pave setting.. it looks like the tiffany legacy setting. is this diamond ok with the setting? I dont want the stone to look darker than the setting






 
Hi,

Any advice on this stone? I would really appreciate any feedback as I have an appt today with the jeweler. This rated 1.6 on the HCA scale, but just not sure about the flourescence? Thanks again for all your helpful advice
33.gif
 
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