
The objective of this project is to automate the color grading
process of polished diamonds
which today still mainly relies on
human observation.
An automatic grading tool could offer improved accuracy and speed, and eliminates the need
of skilled personnel.
The commercially available systems for automated color saturation measurements, rely on a method in which light is introduced in the stone
and the respective attenuation of the various colors is measured. This has some inherent disadvantages as to accuracy. The ultimate goal
of this project is to design a system with much higher correlation to the human grading results in a diamond grading lab, by using a method
which does not rely on attenuation. An automatic grading tool can offer improved accuracy, speed and repeatability and also eliminates the
need of skilled personnel. Lumisense is made for use in HRD lab only.
It provides a link between
human colour observation and
instrumental colour measurement
It is particulary effective in the grading of top colours, without regard for the diamond type or its measure of fluorescence
It delivers highly consistant colour grading
results that correspond with the results of human examination.
The combination of technology and grading skills yielded a concept that goes far beyond spectrography.