URGENT OPINION NEEDED! 2ct RB proportions

[Mondays]

Hi Everyone!

I've been doing quite some research on PS and I've leanred a lot! But I'd be very grateful if anyone can give me their 2 cents on this 2ct RB that I have recently purchased.

Here are the specs:
T: 57
D: 60.6
CA: 33.5
Crown height: 14%
PA: 40.8
girdle: 3.0%
(if you require more info pls reply)

My concerns about this diamond are the shallow angle CA and low crown height paired with the shallow PA.
Do you think there will be significant light leakage under the table? The ASET attached is in a computerised form, so I am not able to decipher whether the light red tones under table would translate to a light translucent red/pink colour which equates light leakage?

Or am I completely wrong? overall is this a good ASET?



Any advice is appreciated! Thank you in advance!

 

[TODiamonds]

I'm not an ASET expert by any means but that looks decent to me...

I wouldn't call 40.8 PA "shallow" - that's right about where you wanna be. Yes crown angle/height are on the shallower side, but that's really a matter of personal preference. I prefer 15-15.5 crown.

 

[Mondays]

I'm not an ASET expert by any means but that looks decent to me...

I wouldn't call 40.8 PA "shallow" - that's right about where you wanna be. Yes crown angle/height are on the shallower side, but that's really a matter of personal preference. I prefer 15-15.5 crown.

Thanks so much for your imput. I just didn't know how to interpret a 'digital' ASET image. but knowing one person thinks it's decent is a good!

 

[OoohShiny]

Run the figures through the HCA tool (under the Tools tab at the top of the forum) to see what it scores - under 2 is what you are looking for but up to mid-2s can still work.

 

[Mondays]

Run the figures through the HCA tool (under the Tools tab at the top of the forum) to see what it scores - under 2 is what you are looking for but up to mid-2s can still work.

Thanks! I did whatt you suggested before and the stone scored 0.8 with 4 EXs!
It only concerns me b/c after reading PSer's recommended number combination, I realised this diamond doesn't have the best angle combination. So i resorted back tot he ASET. this one in particular is kind of hard to read.

 

[TODiamonds]

Thanks! I did whatt you suggested before and the stone scored 0.8 with 4 EXs!
It only concerns me b/c after reading PSer's recommended number combination, I realised this diamond doesn't have the best angle combination. So i resorted back tot he ASET. this one in particular is kind of hard to read.

There's no "best" combination. You can still have a beautiful super ideal diamond with a crown angle of over 35 or under 34 if it's complimentary with the PA. People generally recommend a certain range because it's "safer". If you like the look of the diamond, you should be very happy with it.

 

[OoohShiny]

As mentioned, there are a range of angles that work for crown and pavilion, and in this instance the slightly lower (than the usual PS-recommended 'safe' range) crown with that pavilion angle means they should work well together, and are creating a shallower stone that should have larger spread (size) for the carat weight. The lower crown height may reduced coloured 'fire' a bit but it would instead give lots of bright white light return.

The ASET looks fine to me (not an expert! lol) so I think this could be a great option. Shallower stones may be at risk of too much obstruction, looking too dark when up close-up, but I think that is only really a risk with small tables (under 55%, say) and short lower girdle facets (75%), so I think yours should be fine.

If it looks great and you aren't seeing any issues with it, put the PS-induced paranoia to one side, lol, and enjoy it!

 

[Garry H (Cut Nut)]

Crown height is a non bit of data.
Light reacts to angles.
The crown angle is 1 degree lower than so called optimum 'Tolkowsky'.
This is the equivalent of a 0.2 degree reduction in pavilion angle if the crown angle was 34.5 degree.
I would challenge any of our expert consumers or trade to pick the difference between this stone and Tolkowsky ( naked eye from no closer than 18 inches 45cm because there is a pattern difference that smarty pants types might try to identify).
It may be just possible to identify that a Tolkowsky may have a little more fire and a little less brightness.
is it for a ring or pendant?

 

[Mondays]

Crown height is a non bit of data.
Light reacts to angles.
The crown angle is 1 degree lower than so called optimum 'Tolkowsky'.
This is the equivalent of a 0.2 degree reduction in pavilion angle if the crown angle was 34.5 degree.
I would challenge any of our expert consumers or trade to pick the difference between this stone and Tolkowsky ( naked eye from no closer than 18 inches 45cm because there is a pattern difference that smarty pants types might try to identify).
It may be just possible to identify that a Tolkowsky may have a little more fire and a little less brightness.
is it for a ring or pendant?

Thank you so much for your input Garry!

From my understanding, there may ultimately be a possibility to detect a pattern difference between ideal Tolkowsky and my diamond? (I.e pattern difference is more fire, less brightness) In specific lighting the ‘Tolkowsky’ will have more fire? Sorry but fire as well as scintillation?

The diamond is planned for set as a ring.

Do you have any comments re the ASET image?

Thank you again!!