What is DiamCalc and who benefits from it
What is new in the DiamCalc?
DiamCalc Demo Version
High Dynamic Range Demo movies
Announcements:
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
Tutorial
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
 
FAQ
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
 
DiamCalc
DiamCalcSarin
3DCalc Pro
GemCalc
GemAdviser
3DBook

3DCalc family
 
DiamCalc
DiBox
GemAdviser Free Version
Helium IG
Helium Polish
Helium Rough
Helium Tender
M-Box 2.0
M-Box 1.5
M-Box
Oxygen DZ
Oxygen HIG
Oxygen Immersion
Oxygen Inclusion
Oxygen Microscope Server
Oxygen Viewer Free Version
Oxygen XRay Server
Pacor
Pacor Client
Stereo Viewer Free Version
ViBox

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 : Appraisers
GIA system appraiser

This document shows what criteria DiamCalc uses for diamond grading according to GIA system

The data listed here is not an official GIA data. It is provided here for possibility to check its suitability for your purposes. OctoNus software recommends that you check the data and modify it as necessary as described here before using DiamCalc to grade diamonds for commercial purposes.

Brilliant Cut
Parameter name Meaning E-VG G F
UpAngle Crown angle 34 - 35 32 - 36 30 - 37
DownHeight_GIA % Pavilion depth 43 - 43.5 42 - 44 41 - 46
GirdleHeight_mm Girdle thickness Medium -
Slightly thick
Thin -
Thick
Very thin -
Very thick
Table % Table diameter 53 - 60 52 - 64 51 - 70
GirdleRatio Ratio of max/min diameters 0.98 - 1.02 0.98 - 1.02 0.98 - 1.02
Pavilion % N/A 10 - 25 10 - 25 10 - 25
Culet_mm Culet size Pointed - Medium Pointed -
Slightly large
Pointed - Large
GirdleDeviation % Ratio of max/min diameters -2 - +2 -2 - +2 -2 - +2

GirdleHeight_mm, mm (translation table for girdle thickness)
Girdle description Values
Extremely thin less than 0.08
Very thin 0.08 - 0.12
Thin 0.12 - 0.15
Medium 0.15 - 0.20
Thick 0.20 - 0.33
Very thick 0.33 - 0.40
Extremely thick more than 0.40

Culet_mm, mm (translation table for culet size)
Culet description Values
Pointed less than 0.010
Very small 0.010 - 0.020
Small 0.020 - 0.030
Medium 0.030 - 0.090
Slightly large 0.090 - 0.220
Large 0.220 - 0.400
Very large 0.400 - 0.800
Extremely large more than 0.800

Detailed description of DiamCalc appraisers

HRD system appraiser
AGA system appraiser