Applicable to:
- Brilliant
- Rounded Fancies / Marquise, Oval, Pear
- Rectangular Fancies / Princess, Radiant
- StepCuts / Emerald, Triangle
- Unknown cuts
The diameter of the table facet 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 table facet lay between these planes (similarly to
usual diameter).
Brilliant
There are 4 diameters of the table. These diameters are measured 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 table diameter is measured. All relative
table diameters are calculated using average model diameter. The
software calculates average, minimum, maximum table values using these
4 parameters.
Rounded Fancies (Marquise, Oval, Pear)
Only two diameters of the table are measured for the rounded fancies
cuts: along minimum and maximum diameters. The table is
measured 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 table diameter is measured. The
relative table diameters are calculated using main diameters measured
in the same direction. The software calculates average, minimum,
maximum table values using these 2 parameters.
**Comprehensive list of the Helium report parameters:**
**Measurements are used in different systems and tools:**
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