FInal 2 comparison: GIA rounding effect on HCA?

[surfnrg]

Final 2 comparison. What do you guys think??? Both have similar clarity.

1) AGSL(000) 1.66 E with HCA=1.0 Table 56, Depth 61.8, Cr 34.3, Pav 40.7

 

[surfnrg]

2) GIA Ideal 1.73 G with HCA 1.6 Table 56, Depth 61.9, Cr 35, Pav 40.8.
(how much variance in in true HCA with GIA rounding effect? could it make the HCA >2?)

 

[surfnrg]

Anybody????

 

[JohnQuixote]

Both look promising by the numbers.

Date: 8/7/2007 10:55:56 AM
Author: surfnrg
2) GIA Ideal 1.73 G with HCA 1.6 Table 56, Depth 61.9, Cr 35, Pav 40.8.
(how much variance in in true HCA with GIA rounding effect? could it make the HCA >2?)

GIA does not have an ''ideal'' grade. The numbers put it in EX and any variance outside the rounded numbers would not place it outside that. Remember HCA is a rejection tool - neither of these are rejected. Bring on more detailed info, images, etc.

 

[Lord Summerisle]

forgive me - I''m a little rusty on this

But really looking at them, they are both nicely with in the AGS Ideal range - even if the the GIA measurments are out by 0.1° on both the crown and pavilion then your looking at a 2.2 HCA score... if one is out then its a 1.8 - really your not going to notice such differances, and your micro analysing something beyond the point you can with the HCA.

watch the video on here with Leonard & James Allen about ''can you tell the differance between 3 ideal cuts?'' even they struggle to tell them apart...

so really it would come down to which is more important to you: the slightly lower weight 1.66 but with a higher colour grade E or the slightly heavier 1.73 G colour - spread wise with only 0.1% in it your talking probly 0.01mm differance in the face up size - something not noticable. So go with the one which either makes you feel more comfortable in respect to colour, is the cheaper... or does the clarity have a bearing (ie is one a SI1 with a large black spot under the table? or are they both ''eye clean'' or happily ''Mind Clean''

does that help at all?