.905 crt.; SI1; H color; AGS Ideal 0 (also ideal polish and symmetry); inert fluorescence; table=54%; depth=62.1%; 6.19mm-6.25mm * 3.86mm; crown=15.7% (34.8deg); pavilion=43.6% (41.3deg); thin girdle; no cutlet. Price is $4,308.

Any insight as to these measurements and whether the cost is consistent would be most appreciated. Thanks.

I ran your numbers through the cut adviser on this site and it reads back as follows:

<<Holloway Cut Adviser



Selected: 62.1% depth, 54% table, 34.8° crown angle, 41.3° pavilion angle
The result is for a symmetrical diamond with a medium girdle and very good polish


Factor Grade
Brilliance Good
Fire Fair
Scintillation Fair
Spread
or diameter for weight Very Good
Total Visual Performance 5.1 - Good - Only if price is your main criteria

Many diamonds with excellent scores may not be traditional 'ideal cuts' but we
believe their value will rise once the GIA establishes its cut standard.
This system is being continually fine-tuned and results may change without notice.

Garry Holloway FGAA DDT


Please be advised to have any diamond you purchase evaluated by an
independent accredited appraiser before the expiration of the vendor return policy>>

Have you seen this diamond? It is quite deep. There are some AGS 0 diamonds that are less beautiful than non-AGS 0 cuts.

If you haven't already done so, you can read the tutorial and watch the video on this site.
http://www.pricescope.com/tutorial.asp

Hope this helps.

Did you verify the diamond with Blue Nile, as in asking them to send you a copy of the
AGS certificate?
Also call AGS to verify that the certificate number matches their records (just being safe).
Thanks

I only can guess that "Belgian" cut is about the same as "Russian" cut... If there is no grading report for the diamond, you need to be very careful and evaluate it with independent knowledgeable appraiser. Best of all would be to ask your vendor to send the stone to GIA or AGS. It would cost some money but at least you would know what you are buying.

True Tolkowsky proportions should give you a great diamonds. Unfortunately some labs use this term very freely. You should look on the proportions including crown and pavilion angle.

In your first question the AGS0 diamond has deeper than Tolkowsky pavilion angle that cause partial light leakage under the table (see our tutorial). AGS still call this stone ideal and you will be asked to pay premium for it - not a good idea.

Since you are in Texas you might want to check Whiteflash.com. They are in Houston and sell great branded A Cut Above Hearts and Arrows stones. Bob is very knowledgeable gemologist. And their prices are very reasonable.