NEED HELP with a HRD cert and opinions on this diamond

[starr]

In my ongoing diamond search i come across a diamond listed with the diamondexchange and its has a HRD certification. The info proided is a bit different then what GIA and AGS provide so i could use some expert help on this one.

Here is all the info from the Cert:

Brilliant cut
0.79 ct
VS2
colour: rare white (G)
flouresence: nil
measurements: 5.93mm x 6.00mm x 3.64mm
proportions: very good (top HRD rating)
girdle: medium 3% faceted
culte: pointed
table width: 58%
crown height: 15.0%
pavillion depth: 43.0%
finish grade: very good (top HRD rating)
comments: hearts & arrows

price is approx $2900 USD

This is what i have been able to come up with:

The crown heigth, pav. depth and table all rank 1A on the AGA cut grading system.

doing some quick math, i came up with the total depth using (5.93+6.0)/2 = 5.965, 3.64/5.965*100=61.02
total depth % = 61.02 (1A)

I then ran all these numbers in the HCA and got a score of 2.1 VG/EX/VG/VG. The score is alright, but because we are using % and not angles its not quite as precise and i would expect to see a better score when using the angles.

I have this diamond placed on hold for me and would like to hear the experts opinions before i go any further.

Also, how accurate is the HRD cert versus if stone was cert''d by either GIA or AGS?

thanks in advance!

 

[Giangi]

HRD is perfectly fine. I''m european and most of the certs we get are either IGI or HRD Antwerp. It should be pretty comparable with GIA grading. Keep in mind they do grade according to european standards, so slight differences may be found.
That said, I really suggest you try and get at least a sarin report so that we can find out more about the stone. The stats you posted are promising but they don''t tell the whole story.