Patent ID: 7355683
Filing Date: 2008-04-08
Classification: G01N

Abstract:
1. A method for evaluating the fire potential of a gemstone, the method comprising; generating a representation of the geometry of a gemstone having a table and a plurality of faces; defining a target point above said table of said gemstone; tracing a first ray of a ray pair having a first wavelength from said target point through said gemstone allowing said first ray to interact with at least a portion of said faces; determining a source point at which said first ray intersects a first surface after leaving said gemstone; tracing a second ray of a ray pair having a second wavelength from said source point and through said gemstone allowing said second ray to interact with at least a portion of said faces; determining an intersection point at which said second ray intersects a second surface; calculating a dispersion between said first ray and said second ray; repeating the above steps for a plurality of ray pairs; and using said dispersions to evaluate the fire potential of said gemstone.