Date: 12/6/2009 8:08:48 PM
Author: Stone-cold11
Depends on how off the facet alignment is. I believe it is possible for some of the less well aligned stone, but there are also some that are impossible to tell from a H&A except maybe an expert. One thing to note is that the ACA is cut to the traditional definition of a H&A, some proportions can have excellent optical symm too but still rejected from a traditional H&A definition, like the modified H&A of GOG.
The traditional H&A must have a heart shape without a cleft in the middle of it. The GOG are modified to have thinner more splintery arrows and a as a result you see a cleft in the hearts image which would disqualify them from the traditional stringent criteria of hearts and arrows. However the optical symmetry of these are still ideal even though you can't see a perfectly formed heart. See this diamond and hearts image below:Date: 12/6/2009 11:51:56 PM
Author: noob2010
Date: 12/6/2009 8:08:48 PM
Author: Stone-cold11
Depends on how off the facet alignment is. I believe it is possible for some of the less well aligned stone, but there are also some that are impossible to tell from a H&A except maybe an expert. One thing to note is that the ACA is cut to the traditional definition of a H&A, some proportions can have excellent optical symm too but still rejected from a traditional H&A definition, like the modified H&A of GOG.
What is the modified H&A from GOG and why is it rejected from the traditional H&A definition. I assume the WF ACA is a traditional H&A?
Thanks
The modified h&a from GOG have longer lower girdle facets, Jon has these specially cut as he and some of his clients particularly like that look, this can give a more splintery appearance to the arrows and give the effect of sharp flashes of light. As the LGF''s get longer, a cleft or split in the arrow pattern can be seen that more traditional h&a diamonds do not have. Yes, the WF ACA is of the traditional h&a type.Date: 12/6/2009 11:51:56 PM
Author: noob2010
Date: 12/6/2009 8:08:48 PM
Author: Stone-cold11
Depends on how off the facet alignment is. I believe it is possible for some of the less well aligned stone, but there are also some that are impossible to tell from a H&A except maybe an expert. One thing to note is that the ACA is cut to the traditional definition of a H&A, some proportions can have excellent optical symm too but still rejected from a traditional H&A definition, like the modified H&A of GOG.
What is the modified H&A from GOG and why is it rejected from the traditional H&A definition. I assume the WF ACA is a traditional H&A?
Thanks
Some ES are '' near miss'' ACA and there would be little to no visual difference between these two types when set. Some ES '' fail'' as ACA due to various reasons such as a heart is a little off but these can be an excellent choice for the customer who isn''t bothered about having picture perfect h&a.Date: 12/6/2009 7:45:15 PM
Author: Josh48329
Following that reply, which I believe I correctly understand, would one be able to tell the difference between one of their ACA stones and a similar ES one once it is set? Obviously each stone is unique, but I''m asking for a general case.
Sorry for the slight thread hijack!
Date: 12/6/2009 7:45:15 PM
Author: Josh48329
Following that reply, which I believe I correctly understand, would one be able to tell the difference between one of their ACA stones and a similar ES one once it is set? Obviously each stone is unique, but I''m asking for a general case.