What is DiamCalc and who benefits from it
What is new in the DiamCalc?
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
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
DiamCalc : How to..
Quick guide on Key operations

How to vary cut parameters?

DiamCalc displays cut parameters in the parameter panel, which is located in the right half of the application's window:


A notebook-like structure has two tabs: Proportions and Advanced. Proportions tab holds most common parameters, such as diamond diameter, total height, etc. Most values can be adjusted to describe the stone more precisely. If only some proportions are known, DiamCalc assigns reasonable estimates for parameters that cannot be measured.

There are two different methods of changing parameter's value. First, a new value can be entered directly from the keyboard. To do this, select a chosen parameter value with the mouse, type in a new value, and press Enter key at the end. The other method is to use buttons that are on the right of each parameter which value can be changed. Note that a slider named "Step" allows to tune the amount by which those buttons change the value. For example, when the slider is average (default) positions, buttons change the diameter by 0.1 mm; when it is in the "Fine" position, those same buttons change the diameter by 0.01 mm.

See also "Selecting measurement units and parameters to show" section that describes how to change presentation of some parameters: select one of available measurement units, choose one of similar parameters ("dual" parameters), etc.

The parameters on Advanced page of parameter panel usually depend on the current cut. Let us examine parameters that are available for Brilliant cut diamonds.


"Square deviation", "Star facets" and "Lower facets" parameters describe proportions that rarely change in modern diamonds, but can vary in unusual and especially old cuts. This allows to apply DiamCalc not only to standard Brilliant cut, but also to older round cuts.