This parameter is applicable to Oval cut.
Square deviation is the ratio of the stone projection area to the area of minimal rectangle containing it, normalized so as to equal 0 when the projection is an ideal ellipse.
Square deviation = (S1/S2 - 0.784)/0.3
Note that Square deviation is reported in MyAppraiser (but not in the Standard report) in percents, that is, multiplied by 100.
Reporting
Square deviation does not appear in Polish reports.
Reported in | Values | Units | Bookmarks |
---|---|---|---|
Standard Report for Rounded Fancies | Avg (the only value) | None |
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