Diamond Cut Proportion Grading and symmetry analysis using HELIUM POLISH for GIA AGS IGI HRD Lab

Sept. 14, 2008 - PRLog -- With superior lens and Camera systems and with Sub Pixel imaging systems Helium Polish has became an indispensable tool for Diamond Cutting Industry for manufacturing as well as for Diamond grading which is either equivalent or sometimes better then the existing labs for all the geometrical and Optical parameters which can  put more confidence into their own products.


http://www.octonus.com/oct/products/helium/polish/

http://www.lexus-com.com/download/software/presentation/heliumgroup/heliumpolish.pps

The Helium Polish diamond scanner is a new device for cutting factories, laboratories and dealers. When a diamond is scanned with Helium an accurate 3D-model is constructed for the angle of inclination and the azimuth. This 3D model allows accurate visualization and realistic images to be produced that can show small distortions of symmetry and to use the output with various systems of appraisal. The program creates user-defined reports including that you can make with whichever selection you choose from the information in the detailed Helium report.

Existing scanners measure facet angles using a silhouette approach. But a facet has more than just an inclination, to properly describe it, we also need to know its orientation - what we call its azimuth. The Helium 3D-model also includes such elements as additional facets.


Please find some information regarding the new GIA and AGS cutting labs and how you can cut your diamonds to make certified Diamonds  exactly as per the GIA or AGS Labs with minimal loss of weight and maximize your profits.


(a)   Least count of 1-2 Microns.
It means that it can measure as close as 1-2 Microns. (1000th part of a millimeter) .
Gone are days where old measuring systems use to measure with an accuracy of +/- 20 Microns. So now you see exactly 6.688 and not 6.90.

(b)   Repeatability accuracy at the highest level.
So now if you measure any diamond with Helium , you will receive readings in pavilion like 41.32 , 41.31 ,41.32….. and not 41.2,41.3,41.4… . So do not worry about the repeatability up to 1 digit after the decimal. It will remain untouched. Ie. 41.3

(c)   New Optical Symmetry reports with new cut grading systems
Twist measurements, facet matching, Facet Junctions are measured at the highest level where the diamond model exactly replicate the original model to calculate Optical symmetry for real beauty of the diamond.  Multiple Lab reports fetch you the cut and symmetry report of all the existing labs of the world including GIA,AGS,AGL,HRD,IGI…. Configurable to your own standards or higher standards then the existing labs in the world

(d)   Calulation of Contrast / Brightness / Scintillation / Fire
With award winning software inbuilt Diamcalc ®  - a software from the same company which is the best, economical & largest selling software world wide for Getting Heats & Arrows , Asset scope images, Ideal scope images , Real view and Light return Analysis and ray trace study of the diamond. The Free software GemAdvisor® can be given free to your clients to closely look at the diamond E-Image from a distant.


1. Constructing of some round fancy model created by asc sample is improved More details
2. Triangle door pointer is available on pictures in the report More details
3. New universal report for unknown and any cuts is available More details
4. Girdle assymetry is improved More details
5. Autosave STL option More details
6. New parameters for Step Cut / Triangle More details
7.Parameters of curve, head, point and wing facets and illustrations are available in reports for polished rounded fancies More details
8. Constructing of fancies models are improved in the Any Cut mode More details
9. AGS Spread is available in the reports More details
10. Name of facets are added into the illustrations of Round Fancies for semipolished report More details
11. New parameters and report illustrations for Prince & StepCuts: Girdle facets slope & azimuth angles More details


3D model of round brilliant created by Helium polish is enough to estimate optic and minor symmetry quality. You can export 3D model to DiamCalc software and explore it. DiamCalc allows creating photoreal image of Helium Polish 3D model.

The system scanns different distortions, for example girdles with a conical shape, and calculating parameters more correct than manual measurements.

A very detailed reports displays most physical features of the polished diamond, including "Minimum Inscribed Circle - MIC", Error in radial roundness, Kozibe, Fish eye angle, Spread, Out of shape, Inclination + Azimuth angle of all the halves, Crown and Pavilion painting type and many other

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