Round Brilliant Cut Beauty and Light Performance Part 1

Round Brilliant Cut Beauty and Light Performance

  Round Brilliant Cut Beauty and Light Performance Part 1 Going back over 100 years, numerous efforts have been made to analytically prove the superiority of the small range of angles called ‘Ideal’. Several metrics and methods have been developed in attempts to provide this proof. Ray tracing was employed by many (e.g. Marcel Tolkowsky…

Read More

Round Brilliant Cut Beauty and Light Performance Part 2

round diamond ring for acagemlab home

Round Brilliant Cut Beauty and Light Performance Part 2 Going back over 100 years, numerous efforts have been made to analytically prove the superiority of the small range of angles called ‘Ideal’. Several metrics and methods have been developed in attempts to provide this proof. Ray tracing was employed by many (e.g. Marcel Tolkowsky in…

Read More

Diamond’s Spectral Constellation

Diamonds Spectral Constellation banner

Discover the  ‘Diamond’s Spectral Constellation’.  Michael D. Cowing explains why the ‘Spectral Constellation’ is the ‘nexus’ connecting a diamond cut’s light performance and its illumination and why it is the key to understanding the occurrence of fire in a diamond when used as a gemstone optical analysis technique. Diamond’s Spectral Constellation  

Read More

Objective Diamond Clarity Grading

The diamond clarity grading scale used worldwide today was introduced by the Gemological Institute of America (GIA) in 1953. To help address varying interpretations and inconsistencies in clarity grading between laboratories (and even within some labs), this article introduces an objective system for diamond clarity grading. The determination of the clarity grade is influenced by…

Read More