Heart Shape Estimation (11.20)
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: 3.25 mm
Girdle: Slightly Thick
Normal Shape: NA
Formula will read: 7.03 x 6.86 x 3.25 x .0059 x
1.018 (GTA) = .9413 Rounded to 0.94 ct.
#2 Example of formula in use:
Length measurement: 10.89 mm
Width measurement: 8.94
Depth measurement: 4.72
Girdle: Extremely Thick-
Shape: NA
10.89 x 8.94 x 4.72 x 1.07 (GTA) x .0059 =
2.901 Rounded to 2.90 ct.
