This stone scores 3.5 on HCA. "Total visual perf: Very good, worth buying if the price is right." You can plug in numbers yourself here: http://www.pricescope.com/cutadviser.asp
I'd probably pass on this one unless it was a total steal.
Good luck!
-Anna Magdalena
ps I noticed no one has answered your more specific questions yet.
Unfortunately I don't know either...experts??
Is a thin or thick girdle better?
Is it ok to have a small culet or is non better?
can someone tell me what range to look for in depth and table?
should polish and symmetry be excellent for it to be considered ideal?
I'd pass on this one. It doesn't look very good to me.
Now, let me answer your questions:
A thin girdle is better than a thick one, as you won't pay for some weight that you cannot feel. You can consider it fat. Actually I prefer a medium girdle to a thin one. Less risks of chipping.
A small culet is absolutely okay. Any thing up to medium is not visible with the naked eye...
Table 54-57%
Depth 59.5-61.9%
There isn't a rule... Usually GIA ex/ex = AGS id/id, but it doesn't always work in that way. If you want a true ideal, stick with ex/ex or id/id.
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