Narrowed search... advice on this stone please!!

After a month of research into diamonds, this is what i have come up with for a great looking affordable stone.  Id love to put 5Cts on her finger but alas this is but a stepping stone.  the only catch is this stone is sight unseen, but has a 14day 100% money back guarantee.

(EGL-USA)
Round Brilliant 0.75 Cts
5.91 x 5.86 x 3.61
Clarity: VS2
Color: H
Total Depth: 61.3%
Table width: 58%
Crown Height: 14.6%
Pavillion Depth: 43.0%
Girdle thickness: Thin to Medium Faceted
Cutlet: None
Polish: Very Good
Symmetry: Good
Flouresence: None
HCA: ex/ex/ex/vg  1.3

Sarin info:
5.85 - 5.89 x 3.59
Round Brilliant 0.75 Cts
Total Depth: 61.2% 
Table width: 57.8%   
Crown Height: 34'     
Pavillion Depth: 40.6' 
Girdle thickness:  1.5%  (0.9 -2.0) %
Cutlet: None
HCA: ex/ex/ex/vg  0.8


Using the EGL-USA certificate in the HCA, it shows up as a 1.3.  But in digging alittle deeper and getting a sarin report from the vendor, the numbers changed a bit.  When i enter the numbers into the HCA now, it shows up is a 0.8.  I also used the  David Atlas AGA DIY grading calculator, and this stone shows up as 1a.

Anyone have anythign to point out about this stone, am I missing anything?