Computer system comprising, computer hardware, recorded computer software and electronic hardware for use in connection with diamonds, namely, for measuring, grading, evaluating, sorting, scanning, mapping, locating faults and imperfections, imaging, planning, processing, shaping, cutting and recutting of diamonds; computer system comprising recorded computer software, computer hardware and electronic and optical hardware, for use in the diamond industry, namely, for scanning, measuring, 3-D modeling, rough planning, mapping, ray tracing, generating simulation data, recording, analyzing, evaluating and assigning of cut grades or other descriptive criteria for diamonds; computer system comprising computer recorded software, computer hardware and optical hardware, for use in the diamond industry, namely, for scanning, measuring, 3-D modeling, ray tracing, and rough planning for optimizing the cutting and recutting of diamonds and optimizing of cut performance in diamond design; recorded and downloadable computer software for use in the diamond industry, namely, software for use in diamond cut analysis to model, assess and optimize light performance in diamonds; recorded and downloadable computer software for the generation of reports and certificates in the areas of light performance, cut performance and grading or evaluation of diamonds; recorded and downloadable computer software for use in the diamond industry, namely, software for use in diamond design to create 3-D models of new or existing diamonds designs and to modify 3-D models to create variations of designs for planning, optimization, and analysis; recorded and downloadable computer software for use in the diamond industry, namely, software for use in diamond data analysis to generate data visualizations, automatically identify relationships between geometry and light performance data, and to automate mathematical analysis and interpretation of data