Decide between these two stones for me!

[TOLKIEN]

Stone 1:

2.22 Carat G VS2

Flours: Faint

GIA XXX

Dimensions:

Table: 59
Depth: 61.3
Crown Angle : 35
Pavilion Angle : 40.8

Price: $30,000

Stone 2:

2.35 Carat G VS2

Flour: Faint

GIA XXX

Dimensions:

Table: 59
Depth: 60.1
Crown Angle : 33.0
Pavilion Angle : 41.0

Price: $36,000

 

[Just_Starting]

Well if I had to pick then the second. If you don't already know what the hca tool is then google search for it and you can check some basic numbers that help determine if a stone is any good. Stone one scored 2.5, stone 2 score 1.3. HCA isn't by any means enough information but it can help you get rid of duds, personally I wouldn't go with a stone with a score above 2.

Are you set on 60/60 stones? (if you don't know what this is they are stones with a table and depth around 60%). This means more brilliance less fire usually (and due to large table may appear to face-up larger), they can look very nice or they can look pretty awful. Most PS'ers wouldn't get a 60/60 stone, myself included. A GIA excellent cut is not a guarantee of a winner.

 

[thecat]

Are these 2 your only choices? If they are, can you please ask for their idealscope?

 

[John P]

Since most of the numbers are averages of numerous measurements - which are then rounded up or down - the difficulty is in the unknowns. Statistically #1 has 'safer' crown and pavilion measurements; in the case that the actual measurements stray notably from the given rounded-averages for producing balanced brightness and fire. #2 would tend to indicate a more traditional 60-60 look, with more brightness than fire in the performance qualities. But without more information or imagery such as ideal-scope or ASET this is all speculation.

 

[TOLKIEN]

Thank you for your posts.

I do not have any other data other than the GIA report. Both diamonds are available for me to view but I am no expert - they will both look identical to me.

I would prefer to choose between these two stones.

Thanks

 

[John P]

View them, side by side, in multiple light conditions.

Direct light, such as a jewelry showroom (they will likely both be sensational). Natural daylight. Filtered light if possible - like under a tree with branches moving in the wind on a sunny day. And, most critically, a low-light environment. If you need to crawl under a counter in the showroom that's fine. This mimics normal non-lit-from-above conditions - like many living/sitting rooms - and "romantic" lighting.

18-24 inches is a nice average viewing distance. Some people like to go to 6-8 as well, often for eye-clean judgments. While I doubt you'll see anything in VS2 the fact that they are 2ct+ makes this test a good idea, if it matters to you.

In the direct light note the number and size of colored flashes as you move them. One will likely have perceptibly less than the other, but that all depends on data not in-evidence. Then, importantly, note which faces brighter and which faces with more colored flashes in the other environments.

Diffused light, like an office or under a grader's lamp, is nice for checking eye-clean, faceting, contrast, color-appearance, etc. It's also the poorest condition for dispersion/scintillation, so don't expect fireworks.

Hope these thoughts are helpful.

 

[thecat]

Is there a reason why you're tied to these 2 diamonds? Diamond 1 has a slightly large table while Diamond 2's crown and pavilion angle might be able to work. Both have potential but we can't exactly tell till we see an idealscope. Since they can't provide one, and you mention you aren't experienced enough to tell the difference, following John's guide on which lighting environment to view them should help you. If you aren't tied to these 2 stones, would you like to consider the following?

http://www.goodoldgold.com/diamond/11976/

http://www.goodoldgold.com/diamond/11816/