Complex sentence: IGI provides independent grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestations of origin, laser inscription services and diamond and colored stone courses offered through IGI's Schools of Gemology.
Split into simpler sentences: IGI provides independent grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestations of origin, and laser inscription services. IGI also offers diamond and colored stone courses through IGI's Schools of Gemology.