HCA .8

[Michael Arguelles]

What can you say about this diamond?

Diamond Stats
Carat: 0.44
Depth: 60.9
Table: 56
Crown: 33.5

Pavillion: 40.8
Symmetry: Excellent
Measurements: 4.91x4.94x3
GIA/AGS report # : 1329252523

It has an HCA score of .8

This is for a ring

V360 here below
https://s3-ap-southeast-1.amazonaws.com/pics.glowstaronline.com/Vision360.html?d=agh-79&sr=-30&s=30

 

[AV_]

.
Count me a fan.

Small HCA implies that the stone can deliver a flash as broad as itself (roughly) & I want this from stones up to some size (OK, perhaps any size - but it is clear that at some point this becomes a matter o taste, and my own taste is not so tame)

I would want to see some sort of arrows pattern, even if the stone does not have H&A credentials.

2p

 

[OoohShiny]

.
Count me a fan.

Small HCA implies that the stone can deliver a flash as broad as itself (roughly) & I want this from stones up to some size (OK, perhaps any size - but it is clear that at some point this becomes a matter o taste, and my own taste is not so tame)

I would want to see some sort of arrows pattern, even if the stone does not have H&A credentials.

2p

You have excellent taste, AV_ - I would love to go shopping with you!

 

[OoohShiny]

What can you say about this diamond?

Diamond Stats
Carat: 0.44
Depth: 60.9
Table: 56
Crown: 33.5

Pavillion: 40.8
Symmetry: Excellent
Measurements: 4.91x4.94x3
GIA/AGS report # : 1329252523

It has an HCA score of .8

This is for a ring

V360 here below
https://s3-ap-southeast-1.amazonaws.com/pics.glowstaronline.com/Vision360.html?d=agh-79&sr=-30&s=30

HCA tool is a rejection tool, not a selection tool - anything under 2 is worth considering, at which point you can look at the angles etc.

33.5 crown is on the lower side but the table is in the middle of the PS-recommended range, so it might well have a balance of white light and coloured fire.

The pavilion is shallower than one might expect with a lower crown angle, which means it is a shallow stone (hence the lower HCA score) and therefore will have better spread for the carat weight than other stones.

The pavilion angle is away from the 'danger zone' (40.6-40.45 degrees), where obstruction and leakage can become an issue (if I understand things correctly) so even if the pavilion facets are inconsistent round the stone, I don't think any should be nearing risky shallow angles.

I don't think it falls within PS-recommended 'superideal' parameters, but it might well still be a very attractive stone in real life. I can't get the video to rotate but it looks like a very clean stone from the static picture.

IdealScope and ASETscope images would help confirm cut consistency and identify any areas of leakage.

 

[sledge]

What color is the stone, and does the cert say anything about having a brown tint? To me, the video shows a hint of brown which I actually like but many prefer yellow/buttery tint.

In regards to cut, others have given a good representation. If we get to be picky I'd prefer to see the crown closer to 34, but depending on all 8 actual values (and not just the rounded & averaged GIA reported value) you may be close anyhow.

Echo the others about getting some advanced images if possible.

 

[lovedogs]

HCA tool is a rejection tool, not a selection tool - anything under 2 is worth considering, at which point you can look at the angles etc.

33.5 crown is on the lower side but the table is in the middle of the PS-recommended range, so it might well have a balance of white light and coloured fire.

The pavilion is shallower than one might expect with a lower crown angle, which means it is a shallow stone (hence the lower HCA score) and therefore will have better spread for the carat weight than other stones.

The pavilion angle is away from the 'danger zone' (40.6-40.45 degrees), where obstruction and leakage can become an issue (if I understand things correctly) so even if the pavilion facets are inconsistent round the stone, I don't think any should be nearing risky shallow angles.

I don't think it falls within PS-recommended 'superideal' parameters, but it might well still be a very attractive stone in real life. I can't get the video to rotate but it looks like a very clean stone from the static picture.

IdealScope and ASETscope images would help confirm cut consistency and identify any areas of leakage.

All of this. IS/ASET would help in this case.