Helium help : Comprehensive list of report parameters
Main diameters

Applicable to:

  • Brilliant
  • Rounded Fancies / Marquise, Oval, Pear

Brilliant

There are 4 main diameters of the whole model. These diameters are measured as usual using main pavilion facets for determining the directions of measurement. Azimuths of each pair of opposite main pavilion facets define the direction, in which the main diameters are measured. The software does not calculate average, minimum, maximum values for these 4 parameters.

 Main diameter

Rounded Fancies (Marquise, Oval, Pear)

Only two main diameters of the whole model are measured for the rounded fancies cuts: along minimum and maximum main diameters. These diameters are measured as usual using main crown facets for determining the directions of measurement. Azimuths of two pairs of opposite main crown facets define the direction, in which the main diameters are measured. The software does not calculate average, minimum, maximum values for these 2 parameters.

Main diameter

DiamCalc Brilliant Cut Parameters