Applicable to:
The model`s diameter is measured in 360 directions
with the step of 0.5 degrees, because opposite directions
apply to the same diameter. The minimum, maximum and average diameters, width and length, diameters perpendicular to minimum and maximum are calculated using this array
of values. The direction for minimum and maximum diameters are defined more precisely with accuracy 0,01 degrees.
The diameter of the model in
some given direction is measured as a distance between two
parallel vertical planes placed perpendicularly to the given
direction as close to each other as possible, so that all
vertices of the model lay between these planes.
Brilliant
The parameters are calculated for brilliant:
 Minimum diameter
 Maximum diameter
 Average diameter
 Width  Minimum diameter
 Length  Maximum diameter
 Diameter deviation
The diameter deviation in millimeters is a mere
difference between the maximum and minimum values of the parameter.
In addition to this deviation, there is a relative diameter
deviation parameter that is calculated by the following formula:
(D_{max}/D_{min}  1) * 100%.
Rounded Fancies / Marquise, Oval, Pear
The parameters are calculated for rounded fancies:
 Maximum diameter
 Length  Maximum diameter
 Width  minimum in the direction +/10 degree perpendicular to Length
 Minimum diameter
Rectangular Fancies / Princess, Radiant
The parameters are calculated for rectangular fancies:
 Minimum diameter
 Width  Minimum diameter
 Length  minimum in the direction +/10 degree perpendicular to Width
 Maximum diameter
Step Cuts / Emerald
The parameters are calculated for emerald:
 Minimum diameter
 Width  Minimum diameter
 Length  minimum in the direction +/10 degree perpendicular to Width
 Maximum diameter
Step Cuts / Trapezium
The parameters are calculated for trapezium:
Step Cuts / Triangle
The parameters are calculated for triangle:
 Minimum diameter
 Diameter 1  Minimum diameter
 Diameter 2  extreme in the range +30 degree in the direction 120 degree from Diameter 1
 Diameter 3  extreme in the range +30 degree in the direction 120 degree from Diameter 1
 Width  Minimum diameter
 Length  maximum in the direction +/10 degree perpendicular to Width
Unknown cuts
The parameters are calculated for unknown cuts:
 Minimum diameter
 Width  Minimum diameter
 Length  extremum (minimum or maximum) in the direction +/10 degree perpendicular to Width
 Maximum diameter
All parameters that are measured in millimeters have corresponding percentage values. These percents are calculated relative to average diameter for brilliant or width for other cuts.
