Gemological Institute of America, Inc.

California Institute of Technology

Gemological Institute of America, Inc. (gia)

Al Gilbertson

Troy Blodgett

Ronald Hendrik Geurts

T Scott Hemphill

Tom Moses

Barak Green

Benjamin Gudlewski

Surface ornamentation for a diamond

A system for grading the cut of a diamond utilizes a number of appearance metrics to generate scores for a number of cut components that affect cut quality. These cut components include brightness, fire, scintillation, overweight, durability, polish, and symmetry. The cut grading system employs a cut grading algorithm that processes the individual scores obtained for the cut components to generate an overall cut grade for the diamond. The scoring methodology and the cut grading algorithm are designed to emulate actual observation grading such that the overall cut grade represents a fair indication of the cut quality of the diamond. In one practical embodiment, the cut grading system is fully automated and computer-implemented.

System and method for gemstone cut grading

Growing community of inventors

Murrieta, CA, United States of America

Al Gilbertson