What is DiamCalc and who benefits from it
What is new in the DiamCalc?
DiamCalc Demo Version
High Dynamic Range Demo movies
Caustic Movies in the next versions of DiamCalc
Scenarios - Demo files demonstraite different possibilities and effects of the program
Press Release DiamCalc 3.0 and DiamCalc 3.0 Pro launched by OctoNus
Diamond 3DBook free full version on-line
Video Tutorial - Using DiamCalc & GEM Adviser
DiamCalc Internal Cuts
External cuts (DLL)
Versions history
System requirements
Information for Mac users
Online Store
Illustrated reports
Download DiamCalc
DiamCalc 3.2 beta Documentation (PDF)
External Cuts gallery (Dll)
Online Store
Complete guide
Quick guide on Key operations (How to..)
OctoNus spread & AGS spread
Cut parameters
Cut Quality Estimation
How to Create High dynamic range (HDR) panorama
3DCalc Pro

3DCalc family
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
DiamCalc : How to..
Quick guide on Key operations

How to vary viewing parameters?

It is possible to use different presentations for some parameters. For instance, a slightly oval shape of the girdle can be described by two diameters, minimum and maximum. Alternatively, it can be specified by maximum diameter and deviation (brilliant cut) or ratio of maximum and minimum diameters (fancy cuts).

To choose a presentation option of such a parameter, point the mouse cursor to the parameter's name and click right mouse button. A menu appears, allowing to select a presentation option:

The picture above was taken when the mouse cursor was over "Girdle ratio" field and the right mouse button was pressed. As you see, a menu allows to select between showing maximum and minimum diameters or just one diameter and ratio of diameters.

There are other dual parameters:

  • Girdle square deviation <-> Alternative diameter (measured at direction 45);
  • Star facet length <-> Table picture square-likeness.

There is also a similar way to choose mass precision: 2 digits after decimal point <-> 4 digits.