1. A method to display the scintillation of a gemstone, the method comprising: acquiring the angular spectrum of art oriented gemstone relative a point of observation by: tracing a ray to said gemstone from said, point of observation to a point of intersection of said gemstone; propagating said ray in said gemstone until it exits said gemstone; determining a region of a hemisphere arranged about said gemstone that said ray intersects; coding said point of intersection with a value according to said region that said ray intersects; repeating said steps of tracing, propagating, determining and coding for a plurality of points of intersection of said gemstone; tilting said gemstone to a new orientation relative to said point of observation and repeating said acquiring for said gemstone in said new orientation relative to said point of observation, said point of intersection and said plurality of points of intersection in said repeating being the same point of intersection and plurality of points of intersection as in said acquiring; repeating said tilting a pre-determined number of times; for each point of intersection, averaging said values for said eta point of intersection from all said acquiring; for each point of intersection, mapping said average value of said point of intersection to a location on an image of said gemstone, said location corresponding to said point of intersection on said gemstone.