Trillions   Approximate carat weight of an Trillion cut diamond=Length x Width x Depth x 0.0048     The above weight formula provides an estimate. The actual weight may vary up to 10%, depending on the make, girdle thickness, and accuracy of the measurement tools. Table of Contents Encyclopedia Home Introduction The 4 C's Terminology Depth and Table Percentages How to use The Diamond Buying Guide GIA, AGS, & Commercial Grade Conversion Charts Round Brilliant , Brilliant, Old Mine Cut Pear and Oval Cuts Marquise Cut Heart Shape Princess and Radiant Cuts Emerald, Cushion, and Carre Cut Trillions