Diamond - Color vs Depth %

[JTOUPS1214]

I have two diamonds I'm interested in, but plan on purchasing one. They all have identical specs:
Shape: Round
Carat: 1.78
Clarity: VS2
Cut: Excellent
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Girdle: Medium to Slightly Thick
*To be set in a platinum setting*

The differences are:
1 diamond is H-color with a Depth% of 60.5
7.83-7.86x4.74 - Ratio 1.00
1 diamond is G-color with a Depth% of 62.3 (This diamond is about $1,450 more)
7.73-7.77x4.83 - Ration 1.01

I'm not concerned about the price too much, but which diamond should I purchase??? I read that depth over 61.5 takes away from the light return. But on the other hand, the G diamond has a better color.

Thank you for any help!

 

[JulieN]

you might not be able to see any color difference.

Try using the HCA on them.

 

[yssie]

I have two diamonds I'm interested in, but plan on purchasing one. They all have identical specs:
Shape: Round
Carat: 1.78
Clarity: VS2
Cut: Excellent
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Girdle: Medium to Slightly Thick

The differences are:
1 diamond is H-color with a Depth% of 60.5
1 diamond is G-color with a Depth% of 62.3
Then they do not have identical specs

Which diamond should I purchase??? I read that depth over 61.5 takes away from the light return. You read incorrectly But on the other hand, the G diamond has a better color.

Thank you for any help!

Have you seen these stones? Ultimately it's a G vs. an H, in similarly proportioned and sized stones the difference should be slight, if you even see it.

If you want more detail - colourless stones are graded for *body colour*, not face-up apparent colour. If the stone was unfaceted, the more tinted the body colour (and the more layers of tinted material there are - larger stone) the more tinted the stone would look. But stones are faceted, and the type of light return (faceting and proportions) can and does affect the colour you see face-up.

 

[JTOUPS1214]

you might not be able to see any color difference.

Try using the HCA on them.

Holloway Cut Adviser - That's a nice little tool! I just ran it:

The H stone: Total Visual Performance 3.6 - Very Good - Worth buying if the price is right
The G stone: Total Visual Performance 4.6 - Good - Only if price is your main criterion

Have you seen these stones? Ultimately it's a G vs. an H, in similarly proportioned and sized stones the difference should be slight, if you even see it.

If you want more detail - colourless stones are graded for *body colour*, not face-up apparent colour. If the stone was unfaceted, the more tinted the body colour (and the more layers of tinted material there are - larger stone) the more tinted the stone would look. But stones are faceted, and the type of light return (faceting and proportions) can and does affect the colour you see face-up.

I have not seen these stones. Only the details and the GIA cert.

 

[emeraldmurphy]

you might not be able to see any color difference.

Try using the HCA on them.

Holloway Cut Adviser ??

Have you seen these stones? Ultimately it's a G vs. an H, in similarly proportioned and sized stones the difference should be slight, if you even see it.

If you want more detail - colourless stones are graded for *body colour*, not face-up apparent colour. If the stone was unfaceted, the more tinted the body colour (and the more layers of tinted material there are - larger stone) the more tinted the stone would look. But stones are faceted, and the type of light return (faceting and proportions) can and does affect the colour you see face-up.

I have not seen these stones. Only the details and the GIA cert.

Also, posting the DImensions (L/W/D in mm) might give you an idea of what the physical size difference is due to depth (generally of course, since dimensions are rounded/averaged for certificate), but that might tell you if the G color is 0.1 or 0.2mm smaller face up than the H which would be in addition to any impact to the HCA score for light performance estimate (https://www.pricescope.com/tools/hca)

 

[JTOUPS1214]

Also, posting the DImensions (L/W/D in mm) might give you an idea of what the physical size difference is due to depth (generally of course, since dimensions are rounded/averaged for certificate), but that might tell you if the G color is 0.1 or 0.2mm smaller face up than the H which would be in addition to any impact to the HCA score for light performance estimate (https://www.pricescope.com/tools/hca)

Dimensions below:

1 diamond is H-color with a Depth% of 60.5
7.83-7.86x4.74 - Ratio 1.00
1 diamond is G-color with a Depth% of 62.3
7.73-7.77x4.83 - Ratio 1.01

Holloway Cut Adviser
The H stone: Total Visual Performance 3.6 - Very Good - Worth buying if the price is right
The G stone: Total Visual Performance 4.6 - Good - Only if price is your main criterion

 

[yssie]

post GIA report number and exact ct wt of each stone.

 

[JTOUPS1214]

post GIA report number and exact ct wt of each stone.

1.79ct (H)Stone: GIA 1125775394
1.78ct (G)Stone: GIA 1129854249

 

[JTOUPS1214]

Does anyone have any opinion on which stone I should go with, provided the data I gave?

I have two diamonds I'm interested in, but plan on purchasing one. They all have identical specs:
Shape: Round
Carat: 1.78ct & 1.79ct
Clarity: VS2
Cut: Excellent
Polish: Excellent
Symmetry: Excellent
Fluorescence: None
Girdle: Medium to Slightly Thick
*To be set in a platinum*

The differences are:
1 diamond is H-color with a Depth% of 60.5
7.83-7.86x4.74 - Ratio 1.00
1 diamond is G-color with a Depth% of 62.3 (This diamond is about $1,450 more)
7.73-7.77x4.83 - Ration 1.01

Holloway Cut Adviser
The H stone: Total Visual Performance 3.6 - Very Good - Worth buying if the price is right
The G stone: Total Visual Performance 4.6 - Good - Only if price is your main criterion

1.79ct (H)Stone: GIA 1125775394
1.78ct (G)Stone: GIA 1129854249

 

[diamondseeker2006]

Both stones should be rejected if you are interested in well cut stones with great light return. You generally want an HCA score of 2.0 or less and at least 3 out of 4 being excellent and usually spread is very good. You've probably got problems with the crown and pavilion angles on those stones. Try to look for stones with a crown angle from 34.0-35.0 and a pavilion angle from 40.6 to 41.0 and you'll likely get into the less than 2.0 range

 

[yssie]

post GIA report number and exact ct wt of each stone.

1.79ct (H)Stone: GIA 1125775394
1.78ct (G)Stone: GIA 1129854249

First is fine - have the vendor check it/pull it and inspect and tell you his/her thoughts. Would skip the second based just on the numbers unless the vendor has it in-store already - wouldn't pay to have it shipped out.

 

[JTOUPS1214]

Both stones should be rejected if you are interested in well cut stones with great light return. You generally want an HCA score of 2.0 or less and at least 3 out of 4 being excellent and usually spread is very good. You've probably got problems with the crown and pavilion angles on those stones. Try to look for stones with a crown angle from 34.0-35.0 and a pavilion angle from 40.6 to 41.0 and you'll likely get into the less than 2.0 range

Thanks for the info!

Do you think the light return is more important than color of a diamond?
(for example, if I can get a stone with better dimensions but a color grade lower...is it worth it?)

 

[Garry H (Cut Nut)]

Both stones should be rejected if you are interested in well cut stones with great light return. You generally want an HCA score of 2.0 or less and at least 3 out of 4 being excellent and usually spread is very good. You've probably got problems with the crown and pavilion angles on those stones. Try to look for stones with a crown angle from 34.0-35.0 and a pavilion angle from 40.6 to 41.0 and you'll likely get into the less than 2.0 range

Thanks for the info!

Do you think the light return is more important than color of a diamond?
(for example, if I can get a stone with better dimensions but a color grade lower...is it worth it?)

Cut plays a big role in face up percieved color.
A well cut H will appear whiter than a porrly cut G because the better cut has shorter ray paths and gets in and out of the stone fast where as lessor cuts have a lot of bouncing about which adds to the face up color.