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HCA - Defining the Beauty and Desirability of Round Brilliant Diamonds

Garry Holloway
Abstract
Introduction
Inverse Relationship
Previous Research
DiamCalc
Fire- & Ideal-Scopes
GilbertsonScope
Developing HCA
Brill, fire, scint., spread
Method
Brilliance
Fire or Dispersion
Scintillation
Spread
Summary
Table size
Girdle thickness
Fisheye
Culet
Adjustment to HCA
No Go Zone
Flawed cut grading
BIC and FIC
Seeing is believing?
Accuracy
Market values
Links & References
Holloway Cut Adviser

DiamCalc

DiamCalc is software that models virtual polished diamonds and ray paths as well as create "movies" of a stone being rocked from side to side, a limited version can be downloaded for free from the OctoNus link on the above websites. The software allows other virtual views including Fire Scope™, Ideal-Scope and GilbertsonScope images (discussed next) were used extensively in developing the HCA.
 

 

<< Previous Research  |  Firescope and Ideal-Scope >>
 


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