A diamond's cut is considered to be the most important of the four Cs. It is important to understand how a diamond's proportions and the relationship between them can affect its brilliance, fire, and scintillation.
Holloway Cut Advisor
If you are interesting in purchasing a round brilliant diamonds, and Cheryl Fornash is selecting diamonds to show you, she uses the Holloway Cut Advisor tool to find the best-looking diamonds possible. This is just another step she goes through in the process of selecting the best diamonds to present to you. The Holloway Cut Scale Advisor, or HCA for short, is a tool that analyzes the proportions for round brilliant diamonds and estimates the diamonds’s potential fire, scintillation, light return and how large it looks for its weight. After analyzing the proportions, the HCA will rank the diamond on a scale from 0 to 10, with 0 being the best number possible. The number corresponds to a diamond’s cut with 0-2 as excellent, 2-4 as very good, 4-6 as good, 6-8 as fair and 8-10 as poor. Think of the HCA as a second opinion, if both GIA and HCA give a diamond an excellent cut, you can be assured you are getting a great looking diamond.