Help- Good properties for a diamond?

[diamondnoob02]

Hello folks-
Looking at buying an engagement ring and was able to see this diamond in person...however after doing more and more reading I'm concerned that I should be buying an EX cut diamond compared to a VG. Using the HCA tool this diamond is a 1.0 so should I be less concerned? I'd appreciate your comments on the details of the GIA certified diamond below, I was quoted $7900. Thank you!


Round Brilliant

Measurements
6.79 - 6.82 x 4.05 mm
Carat Weight
1.13 carat
Color Grade
G
Clarity Grade
VS1
Cut Grade
Very Good
proportions

Depth
59.5 %
Table
58 %
Crown Angle
32.5%
Crown Height
13.5%
Pavilion Angle
40.6%
Pavilion Depth
43.0%
Star Length
55%
Lower Half
80%
Girdle
Very Thin to Medium, Faceted, 3.0%
Culet
None

finish

Polish
Very Good
Symmetry
Very Good
Fluorescence

Fluorescence
None

 

[MissGotRocks]

Yes, I would prefer a diamond with cut grade, polish and symmetry all excellent. Use these guidelines to help you find a diamond with great proportion:

Table 55-58
Depth no more than 62.3
Crown angle 34-35
Pavilion angle 40.6-40.9

The diamond you posted is more of a 60/60 cut. The crown angle and pavilion angle are both shallow. If you have a low crown angle, you want a higher pavilion angle and vice versa with a higher crown angle and a lower pavilion angle.

 

[MissGotRocks]

Here is an example of a super ideal hearts and arrows diamond in your size range:

https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-3788903.htm?source=pricescope

 

[diamondnoob02]

Thanks MGR...I guess I'm a little confused because the proportions of the diamond I included are pretty close to the guidelines you mentioned but you mentioned the crown and pavilion angle being shallow? Should I be using the HCA as a guideline as well because although GIA rates the diamond as a VG cut the HCA tool is telling me that it is Excellent in most categories.

I guess I'm struggling with whether or not I have a good value, I'm going through a trusting and reputable jeweler but I might be getting myself caught up on the Cut versus the other properties that are important as well.

 

[bmfang]

Plus/minus a few decimal points either way for crown or pavillion angles can make a drastic difference in how a stone will perform.

HCA only uses a few parameters to give a result. It makes assumptions about girdle size, etc in order to come to a result that should only be interpreted as separating the wheat from the chaff (for lack of a better descriptor) in diamonds.