What is Helium Polish and who benefits from it
What is new in the Helium Polish?
Versions history
Documentation for Helium Polish releases
Advantages for analyzing girdle asymmetry and removing girdle asymmetry
Scanning major and minor symmetry features
Measuring diameter of girdles with a conical shape, "CZ" sample
Photoreal image of Helium Polish 3D model
What is new in the Helium Polish reports?
Reports history

Customizing printing and viewing reports
Customizing export data
Customizing MS Word report templates
Customizing internal text report template
Helium Polish Illustrated reports (one page reports)
Reports for semipolished diamonds and arbitrary cuts
Recut reports
Helium Polish download

Helium Polish Highlights (PDF)
Helium Polish system manual (PDF)
Helium reports documentation (PDF)
Cut parameters
Creating and customizing pricelists (PDF)
DiBox 2.0
GemAdviser Free Version
Helium IG
Helium Polish
Helium Rough
Helium Tender
M-Box 2.0
M-Box 1.5
Oxygen DZ
Oxygen HIG
Oxygen Immersion
Oxygen Inclusion
Oxygen Microscope Server
Oxygen Viewer Free Version
Oxygen XRay Server
Pacor Client
Stereo Viewer Free Version

PACOR - Advanced Computer technologies for Processing of Rough diamonds
Laser Mapping of Concavities
Scanning major and minor symmetry features
Technology patent "A method and apparatus for locating inclusions in a diamond stone"
Immersion Glass
Helium help : Comprehensive list of report parameters
Facets' slope and azimuth angles

Applicable to:

  • Brilliant
  • Rounded Fancies / Marquise, Oval, Pear

All facets of the Brilliant, Marquise, Oval and Pear cuts may be divided into layers: main crown facets, upper facets, star facets, main pavilion facets, lower girdle facets (halves)(figure 1).

Figure 1. Facets of a diamond.

Crown and pavilion facets

Facets of each layer are sorted by azimuth, then the slope and azimuth of each facet is estimated. The azimuth is measured in the range from 0 to 360 degrees. The slope is measured in the range from 0 to 90 degrees. Table facet has zero slope (figure 2).

Figure 2. Measurements of slope angle and azimuth angle for the main facet.

Azimuth and slope angles

The slope angle of the crown main facet is the Crown angle in the Helium report.

Figure 3. Crown angle and pavilion angle.

Crown and pavilion angles

Comprehensive list of the Helium report parameters:

Measurements are used in different systems and tools:

DiamCalc Brilliant Cut Parameters