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.

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.

Comprehensive list of the Helium report parameters:

• Position normalization
• Diameters, Width & Length
• Main diameters
• Ratio (L/W) & Girdle Ratio
• Table
• Culet
• Total height
• Crown height
• Pavilion depth
• Upper and lower girdle facets' heights
• Crown height at girdle minima
• Pavilion depth at girdle minima
• Depth and length girdle facets
• Girdle thickness
• Girdle types for cushion as red, yellow, green and blue
• Corner angle width and Corner angle length
• Facets' slope and azimuth angle
• Facets' slope and azimuth angle for rounded fancies (obsolete)
• Azimuths deviation from ideal
• MIC & Girdle to MIC
• Girdle-Table offset (by table axis),
  Girdle-Culet offset (by table axis),
  Table-Culet offset (by table axis)
• Crown painting and Pavilion painting
• Girdle type (obsolete)
• Trapezium parameters
• Extra Facet / Natural
• Twist
• Statistical values

Measurements are used in different systems and tools:

• Lower girdle facets or halves
• OctoNus spread & AGS spread