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At the JCK show, IGI presents advances such as light performance reports, which scientifically map light return and provide scores for brightness, fire and contrast.

Tel avivUnited statesPaul zimniskyJohn pollardLas vegasCharles colvardImporters associationInternational gemological instituteJewelry grading services atInternational gemological institute of north americaVenetian expoAvi levyNorth americaEducation john pollardPerformance reportsJewelry jeopardy