The Old European Cut Diamond Weight calculator computes the approximate carat weight of a Old European cut diamond based on the average diameter, depth and girdle thickness factor.
INSTRUCTIONS: Choose units and enter the following:
- (V) Vertical Length
- (H) Horizontal Width
- (D) Depth
- (T) Girdle Thickness Factor
Old European Diamond Carat Weight (Wt): The calculator returns weight of the Old European Cut diamond in carats. However, this can be automatically converted to grams or other weight units via the pull-down menu. Note: Both the vertical and horizontal are entered to compute the average diameter in case the diamond face isn't precisely symmetrical.
The Math / Science
The formula to estimate the carat weight of an Old European Cut diamond is:
Wt = vLENGTH * hWIDTH * DEPTH * 0.0064 * wc
where:
- Wt = Carat Weight of an Old English Diamond
- vLength = Vertical Length of face
- hWidth = Horizontal Width of face
- Depth = Depth of side (see diagram)
- wc = Diamond Weight Correction, which is between 1.00 and 1.08 depending on the girdle thickness and mean diameter.
- Mean Diameter = (WIDTH + LENGTH)/2
Weight Diamond Calculators
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,