Rock,Date: 1/9/2005 3:11:58 PM
You really aren''t being clear about the third measurement..
Do you mean depth of the stone?
Or do you mean calculating carat weight?
The formula that Neil posting is for getting an estimate of the carat weight of the stone.
Calculating the depth isn''t something you can calculate.
But even with the numbers, it won''t tell you about the light performance of the stone is.
Get the seller to provide you with the measurement of the depth of the stone.
Even better get a copy of the cert and post it here..
Hope this helps