First time I see this on HRD certificate...

[Stephan]

I went to Antwerp pick my ring today...
Nice ring, I promise to post some pics but my friend is in the UK with his camera so... wait for the pics.

In Antwerp, I saw a diamond.
First look with H&A viewer: per-fect hearts and arrows.
Second look with my idealscope: no white, but the pink was not dark enough in the table.
Without scope: magnificient bright diamond with a lot of big color flashes.
The stars are quite long and the arrows quite bold.

Now, here is what I remember about the HRD certificate:

H-VS2-1.16ct (6.86-6.91x4.11)
table: 57%
crown: 13.5%
girdle: medium, faceted 3% (I saw with my loupe that the girdle at the bezels was a little smaller than at the halves)
pavilion: 43.5%
culet: pointed
fluorescence: none
proportions: very good

And here comes the funny thing I never saw before:

finish grade: very good*
comments: * hearts and arrows

I find this very funny because this diamond isn''t AGS-0.
57% table with 13.5% crown = (approximately) 32.1° crown.

But I must say that it was as breathtaking as the most beautiful H&A''s I saw in my life, and the VS2 was very clean.
HCA result = BIC 0.8 3 EX, 1 VG for the scintillation.

A real amazing BIC H&A... Yes, Mara.

Did somebody here already see a diamond with HRD certificate with "comments: hearts and arrows"? This certificate is written in 2004.

 

[Paul-Antwerp]

Hi Stephan,

I too have never seen this comment before.

However, I do know that HRD offers special certificates with a grading on H&A since about half a year. I never expected any extra info from this, and never seeing such a cert on the market, I thought it was a huge failure.

After all, there was already a long-time-co-operation between HRD and CGL, whereby you could get a CGL-grade on H&A. I always found that the grading of CGL on H&A on these certs was way too loose. Knowing that HRD learned the game from CGL, I suspect they are equally loose on grading H&A.

I wonder what they will say on this week-end's cut conference in Moscow. Really looking forward to that event.

Live long,

Paul

 

[Giangi]

Yes, I have seen it. It's a comment below the finish grade rating, right?
IGI is doing that too. They also attach a picture of the pattern.

 

[Stephan]

----------------
On 4/20/2004 4:19:56 PM Giangi wrote:

Yes, I have seen it. It's a comment below the finish grade rating, right?

IGI is doing that too. They also attach a picture of the pattern.

----------------

Yes, you are right, Giangi.
But with HRD, no pic.
The pattern was great with the scope.

 

[Giangi]

Exactly, no pic is provided. I have seen that. It's useful, but they should state very clearly HOW they grade H&A patterns. I think a pic would be adequate too.

Anyway, I still love HRD.

 

[Garry H (Cut Nut)]

The pale pink under the table must be very pale before it is a problem.

The color shades scale we see with our eyes are much stricter than we expect.

This picture is from a 3D Sarin model of an 8*

 

[Stephan]

Thank you for this explanation, Gary.
Can you tell me why this diamond has so much fire with such a flat crown?

Regards,

 

[Stephan]

----------------
On 4/21/2004 1:07:39 PM Stephan wrote:

Can you tell me why this diamond has so much fire with such a flat crown?
----------------

Bump!
Can somebody answer this question? (Leonid, CutNut, ...)

 

[Garry H (Cut Nut)]

1. Stephan, excellent symmetry will make the pavilion stars very prominent and you will probably see most of the fire from there.
2. You are biased and your stone is the best in the world J
3. I have noticed that some slightly shallow diamonds exhibit stronger fire – I think the reason is that we have a bigger effect from our head obstruction (new AGS word – obscuration – spelling??). We need these extra dark facets to make more fire. –
4. how close is the diamond to your eyes when you see more fire?
5. Are you wearing more dark clothes? (helps)
6. typical illumination environments?

We have discussed this a lot at this conference which is just finishing up.

I am just off to have last breakfast with Peter Yantzer and the rest of the AGS team including Jose Sasian (Prof of Optics Arizona Uni) Jim Caudill –Gemo from AGS, Beryl (Bruce Harding) and Michael Cowing.

Kind Regards

 

[Stephan]

----------------

On 4/27/2004 3:00:48 AM Cut Nut wrote:

1. Stephan, excellent symmetry will make the pavilion stars very prominent and you will probably see most of the fire from there.
   
2. You are biased and your stone is the best in the world J
   
3. I have noticed that some slightly shallow diamonds exhibit stronger fire – I think the reason is that we have a bigger effect from our head obstruction (new AGS word – obscuration – spelling??). We need these extra dark facets to make more fire. –
   
4. how close is the diamond to your eyes when you see more fire?
   
5. Are you wearing more dark clothes? (helps)
   
6. typical illumination environments?

We have discussed this a lot at this conference which is just finishing up.


I am just off to have last breakfast with Peter Yantzer and the rest of the AGS team including Jose Sasian (Prof of Optics Arizona Uni) Jim Caudill –Gemo from AGS, Beryl (Bruce Harding) and Michael Cowing.


Kind Regards





----------------

The diamond looks very good from a 30cm up to 3m distance.
From a 3m distance, it looks bigger than an ideal cut 1.15ct I already have and it's very flashy.
The scintillation seems to be "faster" than other ideal cut diamonds, but I don't know if somebody can see what I mean by "faster scintillation".

My English is still too bad.