Diamond Table %

[washingtonese2002]

How do I calculate the % of a round cut diamond?

 

[DBOF]

The table % is arrived by measuring the longest diagonal (of the four) in millimeters divided into the average diameter.

It can be done on a sarin machine as well, but this will be an average of the four, and may be different than G.I.A.`s method

Take it to a professional for this info.

Brad

 

[washingtonese2002]

Thanks you for your info. Anyway, the diameter or the depth is mesureable manually. Having those depth and diameter numbers, is there any formular to calculate the table percentage?

 

[DBOF]

If you are good at measuring with an millimeter gauge under the scope, find the longest diagonal and then divide into the average diameter.
Takes a little practice and a steady hand since you will be measuring small fractions on a clear little gauge you can place on the table.


Brad

 

[trichrome]

buy a bigger diamond so it will be easier for you
to measure its table %

Trichrome