Colored Gems Weight Estimation Tables

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 Weight Estimation Tables for Colored Gems

 

To obtain approximate weights of the following shapes of colored stones multiply by the following measurements to millimeters. A listing of the specific gravities is below.

 

Round Faceted = ...................Diameter x diameter x depth x SG x .0018

Oval Faceted = .......................Diameter x diameter x depth x SG x .0020

Emerald Faceted = .................Length x width x depth x SG x .0025

Rectangle Faceted = .............Length x width x depth x SG x .0026

Square Faceted = ...................Length x width x depth x SG x .0025

Marquise Faceted = ...............Length x width x depth x SG x .0017

Pear Faceted = ........................Length x width x depth x SG x .0018

Heart Faceted = ......................Length x width x depth x SG x .0018

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