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Dual

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grade display

When GIA Facetware and MyRound grades differ, both grades are displayed in the solution list simultaneously.

Profiles

MyRound_Max

"MyRound_Max" profile is a read-only profile with the enlarged intervals for receiving larger Facetware plans.

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Starting from HPO version 5.0.35, the intervals for the following parameters have been extended:

• Pavilion Angle
• Crown Height
• Total Height

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MyRound_Commercial

The "MyRound_Commercial" profile parameter ranges statistically match the brilliants produced by the large manufacturer.

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MyRound_Commercial_SweetLine

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MyRound_SweetLine

The "MyRound_SweetLine" profile is based on the "MyRound_ModernCut" profile but holds narrowed boundaries for the SweetLine parameter, which means it is aimed at producing solutions with better optical performance (see Using SweetLine for details).

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MyRound_H&A (Hearts & Arrows)

The "MyRound_H&A" profile is intended to produce the solutions optimal from the perspective of the Hearts and Arrows ( H&A ) optical symmetry standard. The profile also contains the set of 8 profile-specific H&A presets, that allow getting a variety of excellent H&A solutions within one run for later comparison and selecting the best one.

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In the video below you can find some information on how H&A profile and presets can be used and examples of produced solutions.

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Here are the profiles of the "MyRound | GIA Facetware + MyRound" appraiser:

Principles:

• Profiles: each next profile is narrower than the previous.

• Presets:

  • the widest preset of each next profile is approximately the same as the narrowest of the previous

    Note
    #2-3 (ModerCut and Commercial) have a specific place in this logic: both of them intersect with their ends with Max and H&A and in most aspects intersect with each other

  • ModernCut and Commercial provide the maximum range: presets for presenting some from Max - presets for in-between - presets presenting some from H&A (see table below)

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    * General idea: presets with the same names give similar results. * Where names repeat, highlighted shows correspondence.

Latest Changes and Upgrades

From version 1.2.95 - improved logic

Starting from HPO version 1.2.95, some changes were made for profiles and presets. Purposes, changes and results are described below.

Purposes

For profiles:

1. Each next profile should be narrower than the previous (see table above). Previously, this logic was not fully supported.

2. Scanned stones should not go outside the EX grade where possible. Previously this happened often.

For presets:

1. The widest preset of each next profile (see table above) should be approximately the same as the narrowest of the previous.

   Note
   #2-3 (ModerCut and Commercial) have a specific place in this logic: both of them intersect with their ends with Max and H&A and in most aspects intersect with each other

2. ModernCut and Commercial should provide the maximum range: presets for presenting some from Max - presets for in-between - presets presenting some from H&A (see table below).

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   * General idea: presets with the same names give similar results. * Where names repeat, highlighted shows correspondence.

Changes

For purposes "Profiles #1 - Each next profile should be narrower than the previous" and "Presets #1 - The widest profiles of each next profile (see table above) should be approximately the same as the narrowest of the previous":

1. In ModernCut, all that was narrower than Commercial was widened.
2. In H&A and H&A 5ct+, all that was wider than Commercial was narrowed.

For purpose "Profiles #2 - Scanned stones should not go outside the EX grade where possible:

1. For ModernCut and H&A, Culet is widened to 0.5 (as in Commercial). Done because the real culet of scanned stones is in this range. Later narrowed by presets.
2. For ModernCut and H&A, HeightGirdleExtraFacet is widened to 3 (as in Commercial). Done because the real girdle extra facets of scanned stone have heights in this range. Later narrowed by presets.
   
3. GirdleBoneLocal, GirdleBezelLocal, GirdleValleyLocal are widened for the same reason. Later narrowed by presets.
   
4. In the H&A, H&A 5ct+ for Symmetry the same values as for Commercial will be used.
   
5. In all profiles, except Max, Roundness parameters (22_5, 45, 90) were widened to 0,7, 0,8, 0,9 which keeps scanned stones in EX grade, but still meets GIA requirements.
6. Roundness 11_25 was added for large diamonds (see "New Parameter - Roundness at 11.25°" section of this documentation".

For purpose "Presets #2 - ModernCut and Commercial should provide the maximum range":

1. In ModernCut, a new preset is added - "1M.H&A" (corresponds to "6.H&A", see table above). It replaced the "7.ExtendedLimits".
2. In Commercial, 2 new presets are added - "1C.H&A" and "2C.H&A" (correspond to "6.H&A", "7.H&A", see table above). They replaced "5.Standard" and "7.ExtendedLimits".

Results

The table below describes changes and results.

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MyRound_H&A 5ct+

The "MyRound_H&A 5ct+" read-only profile is intended to produce better solutions for the big (5ct+) stones.

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Its main differences from the standard "MyRound_H&A" profile are:

• StarLength EX set to 45-55 (istead of 42.5-57.5) 
  

• PavilionPainting EX set to 1.5 degrees (from 2.5)

• Symmetry parameters have been narrowed

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  All these changes aim to produce highly symmetrical solutions with correct proportions for the big stones.

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From version 5.0.35 - Improved Functioning  for Larger Mass for VG Grades

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