Crown % & Culet off ???

[chinluvr]

I''m a newbie that needs some advice. I located what sounded like a great 3.00 ct. MQ diamond. H, IF, Depth 59.3%, Table 57.4%, L/W 1.97, Girdle Med. to Sl. Thick 3.9% (3.6 - 4.2)%, No flour, No culet, Polish VG, Symmetry G. Then I received the crown % - 17.4%. I did the DIY AGA grading and the stone came out as a 3A overall (everything was 1A except the crown % was 3B). Now I''m bummed. Should I be? I haven''t seen the stone yet and wanted to see if you all think it''s worth taking a look at. Due to the steep crown will the stone not have a lot of brilliance and fire? Also, the report stated "culet 1.4% off 2.1%". What does this mean? Will the stone appear lopsided or something?

 

[moremoremore]

OMG- don't mean to digress...but is that a Japense Chin? ( I think that's what it's called). Those are SOOOO cute. Is it true that they don't shed! What a sweet doggie!!!!

 

[moremoremore]

if you like the stone in other respects, I think it's always worth taking a look at. You can just never tell by numbers I think.

 

[diamondsman]

First of all "IF" is an overkill on clarity on that stone ,why not get a stone that is a bit larger with a VS1 quality for the same price!
second, Make sure the seller describes the stone to you ,and make sure that there is a minmal bow tie,and that it's is not on the shallow side.
It's very difficult to evaluate a MQ. shape diamond just from the numbers, you either have to see it, or have someone honest describe it to you.

just my 2 cents

 

[valeria101]

High crown & small table should mean "more fire". The depth is not all that much taking into account that this is a 'long' stone and all those % are computer 'per width'. I would see this one - it has good chances to be a charmer. Brilliant marquizes are not an often encounter though - and if this one deserves the respective denomination, it's a keeper. Given the number, I would say this one deserves descending from ciberspace to an apraiser's shop for you

However, as Diamondsman says, IF clarity is not in the definition of 'best buy' - appealing as the word "internally flawless" might be.

 

[chinluvr]

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On 3/29/2004 10:10:42 PM moremoremore wrote:

OMG- don't mean to digress...but is that a Japense Chin? ( I think that's what it's called). Those are SOOOO cute. Is it true that they don't shed! What a sweet doggie!!!! ----------------

Yes, that's a Red & White Japanese Chin. When I used his pic for my Avatar, it kind of squeezed his head to make the pic fit the frame so he looks flat headed, but he's not. I have two other chins - both black and white females. One of the females is the offspring of this r&w. They do shed a little but not as much as you would expect for a long haired dog. They are wonderful pets and very loving.

 

[valeria101]

Forget diamonds, who needs them !!!! Can we see the three little charmers

 

[chinluvr]

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On 3/29/2004 10:20:26 PM diamondsman wrote:

First of all 'IF' is an overkill on clarity on that stone ,why not get a stone that is a bit larger with a VS1 quality for the same price!
second, Make sure the seller describes the stone to you ,and make sure that there is a minmal bow tie,and that it's is not on the shallow side.
It's very difficult to evaluate a MQ. shape diamond just from the numbers, you either have to see it, or have someone honest describe it to you.

just my 2 cents
----------------

I was not looking for an IF stone when I heard about this one from a local. I had been looking at stones that were the same size and color but in the VS2 to SI1 clarity range. This stone is priced approx. the same as the lower graded stones (<$25K). Although I haven't seen the stone yet (the bottom line will be how good it looks), do you feel that the price is right (<$25k)?

 

[valeria101]

A 2cts marquize H VS2 should be about 12k ! What is this number all about?

That price reads G/F - IF to me for the same specs.

Not great.


My choice of grades for the constraints given would be E/F - VS2/SI1, 2.7-3cts

Does this make sense?

 

[chinluvr]

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On 3/30/2004 9:06:28 AM valeria101 wrote:

A 2cts marquize H VS2 should be about 12k ! What is this number all about?

That price reads G/F - IF to me for the same specs.

Not great.

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I'm confused by your post. The stone I'm considering is Internally Flawless (IF), H color, 3.00 carats.

 

[valeria101]

[deleted stuff]

 

[valeria101]

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On 3/30/2004 8:57:46 AM chinluvr wrote: This stone is priced approx. the same as the lower graded stones (<$25K).
----------------

This is what I was thinking of... The price cannot be the same for IF and SI1.

I made a mistake about weight (looking at the 1.97 number for the lxw ratio I guess). What was I thinking... I hope things can be set right.

No, 25k does not sound way off for the specs. SI1 comes about 30% less and VS2 about 20% less. I was surprised that all these grades were priced about the same.

So... F/G-VS2/SI1 should come about the same as H-IF for the parameters given.

Sorry again for the confussion.

 

[diamondsman]

the price sounds right for that stone, the only thing I would consider is goinfg with a higher color in a vs1 quality for the same price! Like, f color, and vs quality.

 

[resilient]

I have a question. How does an off-centre table or culet affect the diamond? What is the acceptable % range?

 

[valeria101]

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On 3/31/2004 2:00:43 AM resilient wrote:

I have a question. How does an off-centre table or culet affect the diamond? What is the acceptable % range? ----------------

Yay! Do you have a Sarin report infront of you? The Q would make me think this is the case...

Not sure what is the lower level of tollerance for this in % or MM, but there are two things that may help;
- knowing what is the tollerance for H&A diamonds (H&A stones with Sarin posted around here list 0.1-0.3% offcenter deviation, with the 0.1% being the usual 'sight' )
- and the symmetry grade of the stone, which takes this into account. A round with VG-EX symmetry would not have issues with this matter either.

This is the first time I find this Q here. Hope a better answer is on te way

 

[resilient]

bump

 

[Garry H (Cut Nut)]

If you really want to know then read this :
http://www.gemology.ru/cut/english/symmetry/

It might or might not affect the look of the diamond.