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Which RB should I choose? Please HELP!

sparky6

Rough_Rock
Joined
Jun 18, 2009
Messages
29
Hi,

I am a huge fan of Pricescope, you all have soooo much knowledge about Diamonds and I am still learning so much!

I am in the process of upgrading my diamond from a 1.05ct F Si2 to a 1.40-1.50+ RB. I know, not a huge change in size but it is what I can afford.

I have narrowed my search down to a couple of RB's. Please let me know which one you think I should choose?

1.) 1.44 Round Brilliant Cut Diamond
Color: H
Clarity: SI2
Cut: Very Good
Certificate: GIA

More Details:
Depth%: 62.1%
Table%: 55%
Crown Angle: 34.5
Pavillion Angle: 41.0
Polish: Good
Symmetry: Good
Girdle: Thin to Medium
Culet: None
Fluorescence: None
Measurements: 7.20x7.25x4.49mm


2.) 1.54 Round Brilliant Cut Diamond
Carat Weight: 1.54ct
Color: H
Clarity: SI2
Cut: Excellent
Certificate: GIA

More Details:
Depth%: 62.3%
Table%: 57%
Crown Angle: 35
Pavillion Angle:41.2
Polish: Excellent
Symmetry: Excellent
Girdle: Medium to Slightly Thick
Culet:
Fluorescence: Medium
Measurements: 7.35x7.40x4.60mm

1.44ct scores a 1.9 on HCA and the 1.54ct scores a 3.7 very good on HCA.

My concern is that I would love the 1.54ct because its bigger! But it has blue fluoresence which I am not to informed about. However my original F color diamond is very white and I am not sure if I will be used to an H color. Perhaps the medium blue fluoresense will assist the diamond to look more white face up, which is all I would need since it will be in a halo setting.

Please help! Thank you :)
 

thbmok

Brilliant_Rock
Joined
Jul 30, 2010
Messages
891
IMO neither are good options by the numbers. The HCA only applies for stones with at least very good symmetry, so the potential performance of the 1.44 is suspect. The angle combo for the 1.54 is on the steep side and may show visible leakage.
 

sparky6

Rough_Rock
Joined
Jun 18, 2009
Messages
29
Thank you for your help!

Ya I was a bit confused about the 1.44ct getting a high score on HCA.
 

thbmok

Brilliant_Rock
Joined
Jul 30, 2010
Messages
891
If you can see the stones in person before committing to the purchase, compare them with known good performers. See if you can tell the difference and if it bothers you. If you are buying blind without images I think there are safer and better options.
 

sparky6

Rough_Rock
Joined
Jun 18, 2009
Messages
29
what about this one:

It is a 1.40ct Round Brilliant H Colour Si2 EX/EX/EX.

I have attached the GIA report.

Please let me know what you think!

Thanks
 

Attachments

yssie

Super_Ideal_Rock
Premium
Joined
Aug 14, 2009
Messages
21,118
Nothing wrong with the numbers... are you buying in-person, and can you see the stone, see what your eyes think? If not can you get more info - scan, pics, professional review? GIA averages around eight sections of stone, then rounds, we don't know what sorts of ranges went into the numbers on the report or how much they are rounded, and how that impacts look and light return.

Needs to be checked re. eyeclean to your specifications whatever they are (clean from 6"? 12"? from face-up only?) - if you want clean from the sides at close range you're going to have to go up in clarity unless you have particularly poor vision.
 

sparky6

Rough_Rock
Joined
Jun 18, 2009
Messages
29
Thanks for your help!

The stone will ultimately be set in a round halo setting. But I will ask the jeweller to send me an actual photo of the diamond as well to get a better idea
 

sparky6

Rough_Rock
Joined
Jun 18, 2009
Messages
29
Ok so I found out that the 1.40ct H Si2 is not eyeclean.

I found another, what do you guys think of this one?

I have attached the GIA report

It is a G Colour 1.50 Si2 RB
 

Attachments

yssie

Super_Ideal_Rock
Premium
Joined
Aug 14, 2009
Messages
21,118
No go for me.

clarity grading based on clouds not shown in an SI2 + girdle.
 
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