Great article on diamond cut, if you are into all the scientific approach. The big surprises are the so-called ideal cut proportions that have been hyped so much, don’t always outperform all other proportions for light return.
GIA: GIA Research: Article Detail:
“August 30, 2002–The GIA Diamond Proportion Module: Illustrating How Changes in Individual Proportions Affect the Appearance of a Round Brilliant Cut Diamond
Barak Green, T. Scott Hemphill, Mary Johnson, and James Shigley”
