BIC Proportions?

[derekinla]

ALong the same lines as the post on FIC (Bagpuss), what are some general #'s for a good BIC on the HCA?

 

[derekinla]

Garry?

 

[Mara]

View this..it may help:




http://www.pricescope.com/tutor_ideal.asp




BIC's in general have lower crown angles and possibly slightly more steep crown angles. Possibly larger tables, shallower depths. For example if you play around on the HCA and just plug in some numbers, you will see BIC and TIC and FIC scores for certain stones dimensions.




I put in 58 for depth, 61 for table, 31 for crown angle (shallow considering that 34 is more the norm), and 41 for pav angle, and you will find that it scores around 1.6 BIC on the HCA. This would be one combo that acts desirable in the HCA eyes. Ply around with it and see what you find...

 

[tonysgeko]

Will the fact that a diamond is a BIC affect or distort the heart & arrows that you get from a standard IC? Just curious.

 

[Garry H (Cut Nut)]

good analysis Sherlock

http://www.diamond-cut.com.au/23_bicfic.htm