Back to What is new in the Helium Polish 5
The new advantages for analyzing girdle asymmetry and removing girdle asymmetry are available in the HP. Please notice that we changed names and bookmarks of some pictures and parameters for girdle asymmetry in the minor update Helium Polish 5.2 beta More details..
For cuttings, like marquise with two symmetry axes, the new program be able to:
- show real asymmetry of girdle, not only for Length-wise, but for Width-wise also
- make recommendation for removing girdle asymmetry by Length-wise and by Width-wise
- make recommendation for removing All-round girdle asymmetry and creating a diamond with ideal symmetry
The graphics recommendations for removing asymmetry with numerical values you can find in the pictures from reports:
- Pictures show what parts of stone should be removed to create a symmetry stone
- Numerical values shows what mass and area will be loss in case you decided to improve asymmetry and remove part of stone for this
The new asymmetry pictures are included in all reports. Please study descriptions below.
Full report for marquise
There is an example of Full report for marquise with all asymmetry pictures.
Open section Girdle asymmetry on page 6:
The pictures show real Girdle Length-wise and Width-wise asymmetry, recommendation for Lenght-wise, Width-wise asymmetry and All round girdle asymmetry removal and Girdle asymmetry plot.
1) Pictures Girdle Length-wise asymmetry and Lenght-wise asymmetry removal
Picture Girdle Length-wise asymmetry show real asymmetry.
Picture Lenght-wise asymmetry removal show recommendation for asymmetry removing by length only. In this picture new symmetry axis is calculated.
The blue and red half-round lines show what part of stone need to grind off to get symmetry diamond - you should grind off stone parts between blue and red half-round lines.
1) For example,
if blue half-round line is outer and red half-round line is inner
you should grind off left side of stone, if you see from pavilion side*.
2) For example,
if red half-round line is outer and blue half-round line is inner
you should grind off right side of stone, if you see from pavilion side.
The numerical values show that mass and area will be loss after grind off:
For left picture Girdle Length-wise asymmetry: if you grind off stone and make it symmetry you will loss 3,29 % area and 0,67 % mass.
For right picture Lenght-wise asymmetry removal: if you grind off stone and make it symmetry you will loss 1,92 % area and 0,26 % mass.
After grid off stone by this way you will get symmetry stone by Length only, but the stone will not symmetry by Width. So we recommend to use method All-round girdle asymmetry removing. Read about All-round girdle asymmetry removing in the section below.
*you might need to smooth shape of girdle after grind off.
2) Pictures Girdle Width-wise asymmetry and Width-wise asymmetry removal
Picture Girdle Width-wise asymmetry shows real asymmetry.
Picture Width-wise asymmetry removal shows recommendation for asymmetry removing by width only.
Read description in the section above Girdle Length-wise asymmetry and Lenght-wise asymmetry removal.
3) Picture All round girdle asymmetry removal
Picture All round girdle asymmetry removal shows real recommendation of how to create a diamond with ideal symmetry - diamond with symmetry by Length and by Width together.
Red enclosed line shows future ideal symmetry diamond, blue enclosed line shows real diamond.
If you like get ideal symmetry stone - you should grind off parts between blue and red lines. You will loss 2,40 % area and 0,32 % mass in this example, but get ideal symmetry diamond.
4) Girdle asymmetry plot
There are also Girdle asymmetry plot with addition representation of real asymmetry and recommendations of its removing.
The solid green and blue lines show real asymmetry. The dashed green, blue and red lines show: asymmetry with new symmetry axes calculated by software and area should be grind off to make stone symmetry.
So, you can study all three recommendation of removing asymmetry:
- All round
and then decide that variant to select for removing asymmetry.
Illustrated report for marquise and oval
Please note, now we have special new Illustrated report for marquise and oval and universal Illustrated report for round fancies for pear, heart and all type of round fancies.
The special illustrated one page report for marquise and oval also contain pictures with real Girdle lenght-wise asymmetry, real Girdle width-wise asymmetry and recommendation for removing all round asymmetry.
All pictures contains numerical values of area loss and mass loss.
Example of new special Illustrated reports for marquise:
Illustrated report for rounded fancies
For cutting, like pear with one girdle axis, one picture Length-wise girdle asymmetry is available only.
Also this picture can be used as recommendation for assymetry removing.
Example of Illustrated report for pear:
Please notice that definition of girdle asymmetry axis for Pear is improved. Now some Pears look straighter and more symmetric with new symmetry axis.
Illustrated report for cushion
For cuttings like cushion and radiants we suggest recommendation for all-round girdle asymmetry removal:
Example of Illustrated report for cushion:
Example of all Illustrated reports (one page reports)
Download templates of reports
Export report data
To export girdle asymmetry report data use the follow bookmarks:
Girdle length-wise asymmetry
Area loss, % - [GIRDLE_LENGTH_WISE_ASYM_AREA_PC]
Mass loss, % - [GIRDLE_LENGTH_WISE_ASYM_MASS_PC]
Mass loss, % - [GIRDLE_LENGTH_WISE_ASYM_MASS_CT]
Length-wise girdle asymmetry removal
Area loss, % - [RECOM_GIRDLE_LENGTH_WISE_ASYM_AREA_PC]
Mass loss, % - [RECOM_GIRDLE_LENGTH_WISE_ASYM_MASS_PC]
Mass loss, ct - [RECOM_GIRDLE_LENGTH_WISE_ASYM_MASS_CT]
Girdle width-wise asymmetry
Area loss, % - [GIRDLE_WIDTH_WISE_ASYM_AREA_PC]
Mass loss, % - [GIRDLE_WIDTH_WISE_ASYM_MASS_PC]
Mass loss, ct - [GIRDLE_WIDTH_WISE_ASYM_MASS_CT]
Width-wise girdle asymmetry removal
Area loss, % - [RECOM_GIRDLE_WIDTH_WISE_ASYM_AREA_PC]
Mass loss, % - [RECOM_GIRDLE_WIDTH_WISE_ASYM_MASS_PC]
Mass loss, ct - [RECOM_GIRDLE_WIDTH_WISE_ASYM_MASS_CT]
All round girdle asymmetry removal
Area loss, % - [RECOM_GIRDLE_ALL_ROUND_ASYM_AREA_PC]
Mass loss, % - [RECOM_GIRDLE_ALL_ROUND_ASYM_MASS_PC]
Mass loss, ct - [RECOM_GIRDLE_ALL_ROUND_ASYM_MASS_CT]
Back to What is new in the Helium Polish 5