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Emerald Cut Diamond Weight

`Wt = L * W * D * f( L / W ) *wc("Thin-Medium")`
`(L) "Length"`
`(W) "Width"`
`(D) "Depth"`
`(GTF)"Girdle Thickness Factor"`
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The Emerald Cut Diamond Weight calculator/attachments/e6cd0886-da27-11e2-8e97-bc764e04d25f/EmeraldCut.png computes the approximate carat weight of an Emerald Cut shaped diamond based on the vertical and horizontal widths, the depth and a girdle thickness factor.

INSTRUCTIONS: Choose units and enter the following:

  • (L)  Vertical Length
  • (W) Horizontal Width
  • (D) Depth
  • (GTF) Choose a Girdle Thickness Factor

Emerald Cut 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.

Girdle Thickness Factor:  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 (wc) factor.  See Diamond - Weight Correction equation.

Diamond Carat Weight Calculator

This jewelers suite of calculators includes carat weight estimations of diamonds based on the cut diamonds shape and size that can be measured while still within a setting. This enables the jeweler to estimate the carat weigh of the diamond without damaging the setting. Common diamond cuts

The diamond weight formulas contain carat weight equations that are specific to diamonds and diamond cuts:

ACCURACY COMPARISON

The carat weight equations and data used in vCalc's jewelry library and calculator were reviewed by a certified gemologist.   The equations are based on industry recognized formulas and data.  The table below shows a comparison of computations between vCalc and an industry accepted application (Quantum Leap).

The length, width and depth are in millimeters (mm), and the Quantum Leap and vCalc measurements are in carats (cwt).

Carat weight calculation comparison

The largest variance, an oval faceted alexandrite, which can be seen in the last row above, has been double checked against several source equations which tend to support vCalc's accuracy.