Diamond Advice

[rusty_5620]

Hi Everyone

Thanks to everyone for posting here on Pricescope. I''ve been able to acquire an amazing amount of excellent information in a short period of time from this site.

I''m looking at purchasing a loose stone and wanted an opinion on the specs:

Round Brilliant
1.22
E
VS2
cut: ex
polish: ex
symm: ex
6.83-6.94 x 4.21
fluoro: none
crown angle: 34.5
pav angle: 40.8
table: 57
depth: 61.1
pav dep: 43

HCA scores a 1.3 with excellent ratings on everything except spread (scored a very good).

I''m a little concerned about the dimensions 6.83-6.94
I was told that this within an acceptable range for a diamond of this weight.
Cheers,
Rusty
GIA 2105995166
1.22 C
Price $9200 US
PS. Thanks in advance for the response as I know you get a lot of these posts.

 

[Lorelei]

Date: 8/15/2009 2:54:06 PM
Author:rusty_5620

Hi Everyone

Thanks to everyone for posting here on Pricescope. I've been able to acquire an amazing amount of excellent information in a short period of time from this site.

I'm looking at purchasing a loose stone and wanted an opinion on the specs:

Round Brilliant
1.22
E
VS2
cut: ex
polish: ex
symm: ex
6.83-6.94 x 4.21
fluoro: none


crown angle: 34.5
pav angle: 40.8
table: 57
depth: 61.1
pav dep: 43

HCA scores a 1.3 with excellent ratings on everything except spread (scored a very good). This is fine, only shallower depthed diamonds score an Ex for spread.

I'm a little concerned about the dimensions 6.83-6.94
I was told that this within an acceptable range for a diamond of this weight. It is. This diamond looks great by the numbers.


Cheers,
Rusty


GIA 2105995166
1.22 C
Price $9200 US


PS. Thanks in advance for the response as I know you get a lot of these posts.

Hi Rusty!

Thoughts are above.

 

[rusty_5620]

Thanks Lorelei.

I just retreived this excerpt from a diamond grading report.

To calculate an acceptable deviation on a particular stone, average the high and the low diameter dimension given and multiply that number by 0.0154.

Using this calculation on this particular stone I come up with 6.83+6.94 /2 = 6.8850 x 0.0154 = 0.10603. Actual deviation is 6.94mm-6.83mm = .11

Does this mean this diamond is just over the acceptable deviation tolerance by .04 and would be classified as out of round?



Regards,
Rusty

 

[Lorelei]

Its ok Rusty, on PS we see diamonds of the absolute top cut quality which granted do have tighter diameters. However I was talking to a renowned expert who posts here about this very matter a while back, their advice was that yes we do see these tight diameters with many diamonds here however more variance is in fact acceptable. Put it this way this diameter would be fine for me, its just on the edge though, any more and it wouldn't be. So to me not out of round, some might tell you it is and prefer less variance but this is going by the advice of someone I consider a mentor and authority on diamonds.

What I would do is ask for an Idealscope image next if this diamond is online, that will tell us more so we can see how well everything works together.