strmrdr and others. Need your opinions...

[str8crusin]

Found this diamond for a great price. Going to purchase soon, but wondering about thoughts on lower half: 75% and star length: 50%. It scored a TIC of 1.3 and fell between both AGS and GIA plots. I read other posts on this, but from what I gathered you need to assess the pavilion and crown angle to judge LGF and I don''t know how to do that.

GIA Specs below:

Date of Issue: September 03, 2008

Round Brilliant

Color Grade: F
Clarity Grade: VS2
Cut Grade: Excellent
Proportions:
Depth: 61.8%
Table: 56%
Crown Angle: 34.5°
Crown Height: 15.5%
Pavilion Angle: 40.8°
Pavilion Depth: 43.0%
Star length: 50%
Lower Half: 75%
Girdle: Medium to Slightly Thick, Faceted
Culet: None
Finish:
Polish: Excellent
Symmetry: Excellent
Fluorescence: None

 

[strmrdr]

Is the 75% off the gia report? if so it is rounded.

Do you have an IS or ASET image?

I will check back later today as I have to be up in 5 hours and need to get some zzzzzzzzssssss

 

[str8crusin]

Yes, it is off a GIA report and no IS or ASET image.

 

[strmrdr]

A measured 75 is ok with that angle combination the problem with GIA 75 is it can be between 72.5(to short) and 77.49(just fine)
Can you get a sarin scan with the actual number? an IS or ASET image?

 

[str8crusin]

I just emailed my contact for the diamond for the IS or ASET image and will ask for a sarin scan tomorrow morning. What happens if they can't get the requested images. Would you still buy?

Forgot to mention measurements: 6.85-6.80x4.22 Length/Width ratio: 1.01

I know l/w of 1.00 is desired, but is this bad?

 

[Lorelei]

Date: 1/20/2009 1:46:39 AM
Author:str8crusin
Found this diamond for a great price. Going to purchase soon, but wondering about thoughts on lower half: 75% and star length: 50%. It scored a TIC of 1.3 and fell between both AGS and GIA plots. I read other posts on this, but from what I gathered you need to assess the pavilion and crown angle to judge LGF and I don''t know how to do that.

GIA Specs below:

Date of Issue: September 03, 2008

Round Brilliant

Color Grade: F
Clarity Grade: VS2
Cut Grade: Excellent
Proportions:
Depth: 61.8%
Table: 56%
Crown Angle: 34.5°
Crown Height: 15.5%
Pavilion Angle: 40.8°
Pavilion Depth: 43.0%
Star length: 50%
Lower Half: 75%
Girdle: Medium to Slightly Thick, Faceted
Culet: None
Finish:
Polish: Excellent
Symmetry: Excellent
Fluorescence: None

Very nice numbers, should be a good looking diamond - Idealscope is always useful.

 

[str8crusin]

Well I got an OGI report and it doesn't really match the GIA. I'm a little scared on what the OGI says, but again no expert at reading that report. Any thoughts? Should I rely on the GIA report more than the OGI as the store performed the OGI and their calibrations could be off? I'm nervous.... The GIA specs showed a TIC of 1.3, the OGI shows a TIC of 2.9. The diamond comes in tomorrow.

 

[strmrdr]

IS or ASET will answer the questions.

Something is goofy about the ogi scan I agree.

 

[str8crusin]

Bigger Picture

 

[str8crusin]

Any opinions on the the OGI? Good, Bad, Ugly? I understand its not the GIA specs, but can someone explain how to read the pictures? White areas mean sparkly white and dark means no sparkle?

 

[Lorelei]

Any joy on the IS or ASET yet?