By the numbers-why graded GIA Very Good Cut but HCA Score .9

[2Neezers]

Hello,
I am looking at trading in a smaller diamond and came across a very nice looking stone that is graded Very Good Cut by GIA, but passes the HCA with a score of 0.9. I am wondering based on the numbers why it is graded GIA Very Good instead of Excellent Cut?

Here are the stats on the stone:
Table 54%
Depth 62.4%
Crown Angle 34.5
Pavilion Angle 40.6
Crown Height 16%
Pavilion Depth 42.5%
Star Length 55%
LGF 75%
Girdle Slightly Thick to Thick Faceted 4%
Excellent Polish & Symmetry
Medium Blue Fluorescence

I wouldn't typically look at a Very Good cut, but was searching for stones based on some recommended numbers and this one popped up. Is it worth considering even thought it's not graded Excellent cut, but does pass the HCA with a 0.9?
Any input would be very much appreciated.

 

[flyingpig]

Re: By the numbers-why graded GIA Very Good Cut but HCA Scor

why it is graded GIA Very Good

Girdle Slightly Thick to Thick Faceted 4%

One of a very few cases where a VG cut diamond can be a reasonable buy

 

[diamondseeker2006]

Re: By the numbers-why graded GIA Very Good Cut but HCA Scor

Yes, thick girdle makes it not excellent. It also can make the stone face up smaller than it otherwise would. Keep your search within GIA excellent cut only.

 

[denverappraiser]

Re: By the numbers-why graded GIA Very Good Cut but HCA Scor

Flyingpig above is correct, but if you're of the sort that you like to do this sort of thing yourself, here's the link straight from GIA.

https://www.gia.edu/facetware

 

[2Neezers]

Re: By the numbers-why graded GIA Very Good Cut but HCA Scor

Thanks everyone!
It's too bad that a thick girdle can take an otherwise nice looking stone out of the running. The price on this one isn't really discounted to reflect the Very Good Cut grade/Thick Girdle and Medium Fluorescence either, so I will keep on looking.