HCA Holloway Cut Adviser

[Garry H (Cut Nut)]

The Holloway Cut Adviser (patent pending) evaluates the visual appearance of a round diamond as a combination of four factors - Light Return, Fire, Scintillation and Spread.

The grading scale is: 0-2 Excellent, 2-4 Very Good, 4-6 Good, 6-8 Fair, and 8-10 Poor. Zero is almost impossible; many of the factors conflict. Most nice stones rate 1-2.

You must know Total Depth %, Table % and Crown and Pavilion angles which are on AGS reports. Rounded Crown and Pavilion %’s are given on some other reports- they are not very accurate; you should ask the vendor for the Sarin info on these and GIA graded diamonds.
The tutorial explains more about Cut and diamond beauty. A detailed description of HCA is available at www.diamond-cut.com.au
HCA has no symmetry, polish and minor facet info; it should be used for rejecting known bad performing diamonds to narrow down your final selection. Ideal-Scope images and appraisers can help after that.