How to predict the final weight of a gem before cutting it

Описание к видео How to predict the final weight of a gem before cutting it

In this video I show how to calculate the approximate final weight of a gem using the Vol./W3 ratio value reported on any computer generated faceting diagram and an easy application i realized and put online on my website.
The calculator is completely free of charge and doesn't require any installation or download.
The direct link is: http://www.vagabondbottle.com/forms/H...
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