Crown Angles and Face-up Color

[xxxxxx]

Dear PSers, on another thread I read that some people have noticed they have diamonds with a 34.1 crown that are brighter and faced up whiter than ideal cuts with a 34.5 crown. Is this only linked too mrb ideal cuts?
Most ideal cut OECs I see have crown angles between 36.9-
37.1 - but that won’t make the oec ideal diamond appear less light than a mrb idealcut with a smaller crown angle - or will it?

I think we need a pricescope beginner guide on all diamond angles!

 

[Karl_K]

34 and 34.5 degree crowns do you see any difference?

 

[Karl_K]

side by side....

 

[Karl_K]

38crown oec

 

[Karl_K]

side by side

 

[Karl_K]

Many real world examples of oec cuts have shallower pavilions than my virtual model so the mains under the table may be darker.
I wanted to show what is a bit of best case.

 

[Mlh]

@Karl_K , is it true that brightness/whiteness are related to cr. Angle for mrb?

 

[daisygrl]

@Karl_K , is it true that brightness/whiteness are related to cr. Angle for mrb?

It can be argued that the steeper (34.6-34.7) crown will give you more fire than 34.4-34.1.While shallower crown angles will make the diamond look brighter/whiter.

I purposely picked mine to be 34.3 because it is an H color, which was making me a bit uneasy (the lowest I had was G color.) The stone is very white and bright (but it is also CBI stone so that might be the reason.) I also compared ACA 34.6 vs. CBI 34.3 and CBI outperformed ACA in fire (by a little bit.) Thus, I can confirm that steeper crown does not always equal more fire.

It also goes by preference - what you like. I prefer 34.3-34.5.

 

[Mlh]

It can be argued that the steeper (34.6-34.7) crown will give you more fire than 34.4-34.1.While shallower crown angles will make the diamond look brighter/whiter.

I purposely picked mine to be 34.3 because it is an H color, which was making me a bit uneasy (the lowest I had was G color.) The stone is very white and bright (but it is also CBI stone so that might be the reason.) I also compared ACA 34.6 vs. CBI 34.3 and CBI outperformed ACA in fire (by a little bit.) Thus, I can confirm that steeper crown does not always equal more fire.

It also goes by preference - what you like. I prefer 34.3-34.5.

Thanks @daisygrl ! I have been following your journey. I hope you love your new stone!!

 

[Karl_K]

@Karl_K , is it true that brightness/whiteness are related to cr. Angle for mrb?

It`s all relative.
ie sure and everything else too.
The combination is what matters

 

[Mlh]

It`s all relative.
ie sure and everything else too.
The combination is what matters

Wow. I had no idea. Thanks @Karl_K !