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# Diamond Weight Estimates for Fancy Shapes Introduction

Fancy shapes can be more challenging especially when dealing with the pronged end(s) of a pear shape or marquis. Again the important thing to remember is to take your time and to be very cautious. Tenths of a millimeter may… Continue reading

In addition to the GTA (Girdle Thickness Adjustment), some additional adjustments may be necessary for fancy shapes. These additional adjustments may include high shoulders on pear shapes, protruding pavilion bellies on emerald cuts, and squarish shapes on ovals. Continue reading

# Diamond Length-to-Width Ratio for Fancy Shapes

The length measures 7.42 millimeters, and the width measures 3.61 millimeters. 7.42 divided by 3.61 equals 2.056. The length to width ratio is expressed as 2.06:1. In the elongated shapes, a length-to-width ratio (L/W) must be determined to complete this… Continue reading

# Diamond Weight Estimate for Marquise Cut

Length-to-width adjustments (LWA) for weight estimation formula. The LWA is used in all marquis weight estimation formulas. L/W ratio LWA 1.50/1.00 .00565 1.75/1.00 .00570 2.00/1.00 .00580 2.25/1.00 .00583 2.50/1.00 .00585 2.75/1.00 .00590 3.00/1.00 .00595 Marquis Formula: Length x Width x… Continue reading

# Diamond Weight Estimate for Emerald Cut

L/W ratio LWA 1.00/1.00 .0080 1.50/1.00 .0092 1.75/1.00 .0097 2.00/1.00 .0100 2.25/1.00 .0104 2.50/1.00 .0106 Emerald Cut Formula: Length x Width x Depth x LWA x GTA 1) Example of formula in use: Length measurement: 7.86 mm Width measurement: 5.25… Continue reading

# Diamond Weight Estimate for Baguette Cuts

Baguettes are similar to the emerald cut in calculation. Many times in a multi-baguette mounting, you may consider a faster method to determine estimated weights, such as the clear plastic template or loose diamond comparison. For an accurate assessment of… Continue reading

# Diamond Weight Estimate for Pear Shape

Length-to-width adjustments (LWA) for weight estimation formula. L/W ratio LWA 1.25/1.00 .00615 1.50/1.00 .00600 1.66/1.00 .00590 2.00/1.00 .00575 Pear Shape Formula: Length x Width x Depth x LWA x GTA 1) Example of formula in use: Length measurement: 7.35 mm… Continue reading

# Diamond Weight Estimate for Oval Shape

Although the length-to-width ratio is an excellent way to help describe the shape of an oval, it does not apply to its weight estimation formula. Instead, an average diameter must be calculated by dividing the sum of the length and… Continue reading

# Diamond Weight Estimate for Heart Shape

Heart Shape Formula: Length x Width x Depth x .0059 x GTA x Shape Adjustment Again, like the oval an LWA is not employed. 1) Example of formula in use: Length measurement: 7.03 mm Width measurement: 6.86 mm Depth measurement:… Continue reading