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`W = f( L , W , D ,"Thin-Medium")`

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The **Weight of a Oval Brilliant Diamond **calculator computes the approximate carat weight of an oval brilliant shaped diamond using the length, width, and depth of the diamond and a girdle thickness factor.

**INSTRUCTIONS:** Choose units and enter the following:

**(L) Length**(measurement across the face of Oval Brilliant diamond)**(W) Width**(perpendicular measurement from length)**(D) Depth****(GTF) Girdle Thickness Factor:**This is a factor of the girdle (middle) of the diamond.

**Oval Brilliant Diamond Carat Weight (W):** 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 Diamond Weight formulas contains carat weight equations that are specific to diamonds and diamond cuts including the following:* common gem cuts *

- Compute the carat weight of a Round Brilliant diamond
- Compute the carat weight of a Oval Brilliant diamond
- Compute the carat weight of a Heart Shaped diamond
- Compute the carat weight of a Emerald Cut diamond
- Compute the carat weight of a Baguette diamond
- Compute the carat weight of a Princess Cut diamond
- Compute the carat weight of a Triangular Brilliant diamond
- Compute the carat weight of a Marquise Brilliant diamond
- Compute the carat weight of a Pear Shaped Brilliant (Teardrop) diamond
- Compute the carat weight of a Tapered Baguette diamond,
- Compute the carat weight of an Old European cut diamond.
- Compute the carat weight of a Cushion diamond,

The 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).

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.