The Marquise Brilliant Diamond Weight calculator computes the approximate weight of a Marquise Brilliant shaped diamond based on the vertical and horizontal widths, the depth and a girdle thickness.
INSTRUCTIONS: Choose units and enter the following:
Marquise Brilliant Diamond Carat Weight (Wt): The calculator returns weight of the diamond in carats. However, this can be automatically converted to other weight units (e.g. grams) via the pull-down menu.
The user must enter a thickness factor for the diamond's girdle ranging from: Slightly Thick,Thick,Very Thick, to Extremely Thick. This is used to calculate the weight correction factor.
The Diamond Weight formulas contains carat weight equations that are specific to diamonds and diamond cuts including the following: common gem cuts