Deciding between 2 small diamonds

[purpleshirt]

I''m looking for a diamond for a necklace and am debating between these 2 diamonds. There is over a $300 difference between the 2, and when we''re talking about an 800ish $ purchase max for the diamond, that is a lot! Is the size difference huge? Is the smaller one worth considering? I know I have to make the decision, but is the smaller one a nice diamond? Which one would you buy if you were debating? Thank you!!!
(both GIA)

Measurements: 4.81 - 4.86 x 2.98 mm
Carat Weight: 0.42 carat
Color Grade: I
Clarity Grade: SI1
Cut Grade: Excellent
Proportions:
Depth: 61.6%
Table: 55%
Crown Angle: 34.0°
Crown Height: 15.0%
Pavilion Angle: 40.8°
Pavilion Depth: 43.0%
Star length: 50%
Lower Half: 75%
Girdle: Medium to Slightly Thick, Faceted
Culet: None
Finish:
Polish: Excellent
Symmetry: Excellent
Fluorescence: Strong Blue

--------------------------------


Measurements: 5.31 - 5.35 x 3.26 mm
Carat Weight: 0.56 carat
Color Grade: I
Clarity Grade: SI1
Cut Grade: Excellent
Proportions:
Depth: 61.2%
Table: 56%
Crown Angle: 34.0°
Crown Height: 14.5%
Pavilion Angle: 40.8°
Pavilion Depth: 43.0%
Star length: 55%
Lower Half: 75%
Girdle: Thin to Medium, Faceted
Culet: None
Finish:
Polish: Excellent
Symmetry: Excellent
Fluorescence: Strong Blue

 

[jstarfireb]

I think the difference is substantial enough to be notable to the naked eye. I would go for the larger stone. Didn''t run the numbers for the first, but the 2nd has an HCA of 1, within Tolkowsky proportions, so it''s a winner in terms of cut too.

 

[stone-cold11]

Both are well cut from the numbers but the size difference is significant. Diameter ratio of the 2 is 1.0: 1.1.

 

[purpleshirt]

I don't understand the ratio part fully, but I'll take your word for it! I'll go with the bigger one. Thank you to both of you!!

And thanks to you Stone-cold, you found me the bigger one the other day!!

 

[stone-cold11]

OIC. :p

The ratio is just the diameter of #2 stone divided by #1 stone diameter.

 

[chrono]

Part of the difference in pricing might be due to the 0.5ct mark jump. Diamonds tend to have a price jump at certain markers; 0.5 ct, 0.75 ct, 1 ct, etc.

 

[purpleshirt]

oK, I just bought the .56. yay....... (so no more opinions unless you''re agreeing with my decision!!)

 

[Imdanny]

I agree!

 

[Lorelei]

Date: 4/11/2009 8:27:19 PM
Author: jstarfireb
I think the difference is substantial enough to be notable to the naked eye. I would go for the larger stone. Didn't run the numbers for the first, but the 2nd has an HCA of 1, within Tolkowsky proportions, so it's a winner in terms of cut too.

Definitely, you made the right decision.

 

[Rhea]

It''ll be noticable to the naked eye. You made the right decision. Do we get a photo of this diamond?

 

[Ellen]

Date: 4/12/2009 5:42:22 AM
Author: Lorelei

Date: 4/11/2009 8:27:19 PM
Author: jstarfireb
I think the difference is substantial enough to be notable to the naked eye. I would go for the larger stone. Didn''t run the numbers for the first, but the 2nd has an HCA of 1, within Tolkowsky proportions, so it''s a winner in terms of cut too.

Definitely, you made the right decision.

Ditto!

 

[marcy]

You picked the right diamond. Can''t wait to see it.

 

[purpleshirt]

thanks everyone!! Unfortunately, Blue Nile was the only place I could find (with Pricescoper's help) with a diamond I liked...... so no pics. I will be posting pictures on the 22nd!!! Can't wait

 

[kcoursolle]

Date: 4/11/2009 11:54:20 PM
Author: purpleshirt
oK, I just bought the .56. yay....... (so no more opinions unless you''re agreeing with my decision!!)

It looks like I''m jumping in late, but I definitely think this one was worth the bigger price. I don''t think you''ll regret having the extra size it should be killer in person!! I can''t wait to see it!