table size 63%

[jackiem]

Hello, I am interested in purchasing a 2ct F color, vs2 round diamond with the following specs: 8.15 - 8.17 x 4.89 mm,
Depth: 59.9%
Table: 63%
Crown Angle: 34.5°
Crown Height: 13.0%
Pavilion Angle: 41.2°
Pavilion Depth: 43.5%
Star length: 55%
Lower Half: 80%
Girdle: Medium (3.5%)
Culet: None
Polish and symmetry are both excellent.

Sorry, I am just starting to learn about diamonds. Using the GIA facetware cut estimator with these specs (table size 63%), this diamond''s cut is graded very good. When I manipulated the table size to be 1% smaller (62%), the GIA facetware cut estimator gave it an excellent grade. Does this difference of 1% in table size really make that much of a difference? I would like an excellent cut diamond, but this one seems close enough. Does this 1% difference take away alot from the brilliance and fire it would have if it were a 62%? I really would like a diamond that is very brilliant and has alot of fire. My jeweler is telling me this is as good as an excellent cut and the 1% doesn''t make a difference and that the bigger table size is in my advantage. Should I consider buying this? Please help!

 

[Diamond Explorer]

A 63% table is big. But you might be right, that extra 1% doesn't make it a bad diamond. A large table gives the diamond a large mirror-like flash. Some people might like that, makes it especially good for blinding people. jk

Could be a good diamond if it suits your tastes, though, It certainly wont be as well balanced as most prefer on PS.

 

[stone-cold11]

even if the table is smaller, I would not go for this stone as the pavilion angle is too steep for that crown angle, likely to have light leakage.

Have you seen it personally?

 

[phoenixgirl]

Your diamond may exhibit a fish eye. Unfortunately, it''s not as simple as saying 1% difference is a tiny bit so therefore the cut is basically the same as excellent (plus, GIA gives the "excellent" label to far too many stones because it doesn''t require that the crown and pavilion angles complement one another). Check out the Holloway Cut Adviser up top under tools. You''ll notice that changing the table size from 63% to 62% with your stone doesn''t make much of a difference except in the fish-eye department (but it doesn''t make the stone score much better). Scores of 2 and below are preferable. It is possible to have less traditional table and depth percentages (where the table is larger than the depth) and still score a 2.0 or below on the HCA (my studs do this), but they have to have the right crown and pavilion angles.

Just remember that less well cut stones can still look very sparkly under jewelry store lighting and when having been professionally cleaned, so the stone may appear well cut on first glance. Here on PriceScope we do believe that cut is the most important factor, and this stone is not that impressive in the cut department.

 

[Lorelei]

The table is too large and the pavilion angle too steep regardless of the crown angle, I would pass on this one.

 

[Todd Gray]

This says it all...

 

[jackiem]

How can I tell if this diamond is a fish eye? How can I tell if the pavillion and crown angles are good ones for a diamond. Also, it is priced at $21,500...does that change your opinion on it? Please let me know. Thanks so much!!!

 

[swingirl]

If you can drop in color and clarity here is a much better cut.
2.01ct H SI2 GOG

1.003ct H SI1 WF

Or smaller but keeping to an F with a beautiful cut.
1.52ct F VS2 HPD

But I wouldn't sacrifice the cut.

 

[Lorelei]

Date: 7/10/2009 2:22:11 AM
Author: jackiem
How can I tell if this diamond is a fish eye? How can I tell if the pavillion and crown angles are good ones for a diamond. Also, it is priced at $21,500...does that change your opinion on it? Please let me know. Thanks so much!!!

No Jackie, it is a horrible cut and for 21k I want a beautiful stone! Start your search around AGS0 and GIA Excellent cut grade, that should narrow the field.

Here are some numbers you can use as a guide to help you.

some of us use to find well cut round diamonds.
depth - 60 - 62% - although my personal preference is to allow up to 62.4%
table - 54- 57%
crown angle - 34- 35 degrees
pavilion angle - 40.6- 41 degrees
girdle - avoid extremes, look for thin to slightly thick, thin to medium etc
polish and symmetry - very good and above

note - with crown and pavilion angles at the shallower ends ( CA 34- PA 40.6) and steeper ( CA 35- PA 41) check to make sure these angles complement in that particular diamond - eyeballs, Idealscope, trusted vendor input - check as appropriate!

As the above implies, configurations depend on each other. A little give here can still work with a little take there.

From expert John Pollard.

With that said, here's a "Cliff's Notes" for staying near Tolkowsky/ideal angles with GIA reports (their numbers are rounded): A crown angle of 34.0, 34.5 or 35.0 is usually safe with a 40.8 pavilion angle. If pavilion angle = 40.6 lean toward a 34.5-35.0 crown. If pavilion angle = 41 lean toward a 34.0-34.5 crown.

GIA "EX" in cut is great at its heart, but it ranges a bit wider than some people prefer, particularly in deep combinations (pavilion > 41 with crown > 35).

 

[Dancing Fire]

Date: 7/10/2009 2:43:44 AM
Author: swingirl
If you can drop in color and clarity here is a much better cut.
2.01ct H SI2 GOG

1.003ct H SI1 WF

Or smaller but keeping to an F with a beautiful cut.
1.52ct F VS2 HPD

But I wouldn''t sacrifice the cut.

WOW!! a nice looking SI2 stone,could be eye clean

 

[Ellen]

To Lorelei's notes, I would add this. Ideally, you want the x falling within the AGS/GIA overlap, or close to. There's just no reason to consider the one you posted, it would be a huge rip off.

If I had that budget, this would be my own personal pick. The difference in how big this one would look compared to yours would not be that much once in a setting. After you hit the 1 carat mark, and especially as you go up in carat weight, you need quite a bit more weight to make a real difference in size.

This is a fantastic stone, very well cut. And G is safe in almost any size/shape. Gorgeous! Bankwire is the discount.

1.81 G VS2