Diamond Weight Estimation Tables

#1
The following are weight estimation tables. I thought you might find them useful:

Diamond Weight Estimation Table
To obtain approximate weights of the following diamond shapes multiply by the following measurements to millimeters. To obtain length to width ratio divide the length by the width. The measurements estimations below are based on diamonds cut to Class II proportioning or better. Diamonds with poor makes will vary in actual weights.



Rounds = ..........................Diameter x Diameter x Depth x .0061
Ovals = ..............................Length x width x Depth x .0062
Princess Cuts = ..............Length x width x depth x .0083
Heart Cuts = ...................Length x width x depth x .0059

Triangle Cut = ...............Length x width x depth x .0057

Emerald Cut = ...............Length x width x depth x factor:

Factor.....Length to width ratio
.0080 1.00 : 1
.0092 1.50 : 1
.0100 2.00 : 1
.0106 2.50 : 1

Marquise Cut = .............Length x width x depth x factor:

Factor............Length to width ratio
.00565 1.50 : 1
.00580 2.00 : 1
.00585 2.50 : 1
.00595 3.00 : 1

Pear Cut = ......................Length x width x depth x factor:

Factor........Length to width ratio
.00615 1.25 : 1
.00600 1.50 : 1
.00590 1.66 : 1
.00575 2.00 : 1

Source: http://www.yourgemologist.com/Charts%20and%20Graphs/diamondweight.html
 
#5
Thanks for giving such a good chart.............i hope that this will be more helpful foe me. But, as every diamond has its own values so what to do that time.
 
#6
Thanks for sharing the chart well I'm currently looking for an engagement ring for my girlfriend for I am planning to propose and the diamond weight or size kinda frustrates me in a way.
 
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