Advice on a Stone (please!)

[aoshi]

Hi all,

First time poster - recently found this great forum. So far have read through quite a few posts and the advice here has saved me from buying a sub-optimal stone - so thank you all so much.

I'm hoping i could get some advice/thoughts on the following stone (specifically hoping to get some advice/thoughts on the H&A, ASET & IdealScope images please). Thank you so much in advance.

 

[lovedogs]

Do you have a real life image of the stone? I'm 99% sure that it will be eye clean because it's a VS2, but just good to see it IRL. It looks like a tiny bit of leakage, but it's pretty good!

 

[aoshi]

yes i do pls see attached. Slight visibility of crystal in center.
Would it be fair to call it 'near' hearts?
Looking for some peace of mind prior to purchasing.

 

[headlight]

Hi! I know that it says girdle thickness is 2.4 to 2.9%, but do you know how it is described (thin to medium, slightly thin to thin, medium, etc.)?

 

[lovedogs]

I am not any good at "reading" H&A images, but am pretty ok at reading ASET/IS images. Can't say if it's a "near hearts", but it looks pretty good in all of the advanced images. It probably falls short of the "super ideal" cuts like ACA, CBI, etc, but for a GIA XXX it's definitely in the 99.5th percentile.

 

[aoshi]

Hi! I know that it says girdle thickness is 2.4 to 2.9%, but do you know how it is described (thin to medium, slightly thin to thin, medium, etc.)?

Hi, in the GIA report it's described as slightly thick (faceted) 4.0%. I think that 2.4-2.9% might be a typo?.. interesting. Does that change your thoughts?

 

[Karl_K]

Pavilion twist and variation keeps it from being h&a and super-ideal.
Its not bad enough to say its badly cut.

 

[aoshi]

Hi Karl, how about this stone as an alternative:
https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-4022278.htm

 

[Karl_K]

Hi Karl, how about this stone as an alternative:
https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-4022278.htm

As a trade member I can not answer that directly.
I am limited by the rules to more a technical support roll.
Wf is well respected and one of the regulars/prosumers can tell you more about them and the ACA line than I can.

 

[lovedogs]

Hi Karl, how about this stone as an alternative:
https://www.whiteflash.com/loose-diamonds/round-cut-loose-diamond-4022278.htm

A white flash ACA is going to be one of the best possible stones you can buy, and comes with a $1 upgrade policy. I wouldn't hesitate to buy it if it's in budget and you're happy with the size.

 

[Athena10X]

Pavilion twist and variation keeps it from being h&a and super-ideal.
Its not bad enough to say its badly cut.

Not meaning to hijack the thread, but @Karl_K
what do you mean by “pavilion twist”?

 

[Karl_K]

Not meaning to hijack the thread, but @Karl_K
what do you mean by “pavilion twist”?

When you have variations in angles and want to keep the EX/ID symmetry lab grade you have to change the alignment of the facets in relation to one another in 3d space to make everything line. In other words you twist some of the pavilion in 3d space relative to the rest of the stone to make up for the angle variations.
It is manly the lower girdles that are twisted to make up for variations in the pavilion mains.
This shows up in variation of the hearts and optical symmetry defects between the arrows in the face up view mainly.

 

[Karl_K]

This image shows it the best look at the variation between the arrow shafts.
It also show up on the ASET white and IS but not ASET black.
It is not a major issue but it is there on this one.

 

[Athena10X]

@Karl_K are you referring to the circled sections that exhibit obstruction? Want to make sure I’m understanding and visualizing accurately. Thank you!

 

[Karl_K]

@Karl_K are you referring to the circled sections that exhibit obstruction? Want to make sure I’m understanding and visualizing accurately. Thank you!

yep