IGI Introduces new Light Performance Reports

IGI Launches New Light Performance Reports for Round Brilliant Diamonds

Introduction
The International Gemological Institute (IGI) has recently introduced an innovative system to assess the light performance of round brilliant cut diamonds. This ground-breaking development aims to provide a comprehensive understanding of the optical qualities of these exquisite gems.

Understanding Light Performance
IGI’s new light performance assessment is designed to complement traditional diamond grading by delving into the unique aesthetic narrative that each diamond conveys. By utilizing scientific analysis, this system strives to elucidate the appeal of these precious stones through a detailed evaluation of their light performance.

In the IGI system, “Brightness” encompasses all reflected and refracted white light, while “Fire” pertains to the dispersed light visible as flashes of color. Moreover, “Contrast” evaluates the balance and intensity of light and dark areas at common viewing distances. The primary “Light Performance” score reflects the overall strength of brightness, fire, and contrast as they synergistically produce scintillation—a quality considered by many as the most appealing aspect of a diamond.

IGI’s Light Performance Grading Methodology
The system was meticulously crafted by IGI researchers using ray-tracing software and slope proportions logic to evaluate a wide range of parametric data sets for round-brilliant cuts covering 18 table sizes. Parameters judged to have exceptional performance were further assessed using structured light environment renderings and physical science to calculate scores for commonly described aspects of diamond beauty. This comprehensive approach provides a more in-depth understanding of a diamond’s unique light behavior, empowering manufacturers to target the best results.

Computer-Generated Assessments
To further reinforce the scores, IGI develops a computer-generated map of the diamond in an instrument called the ‘Ideal-Scope,” providing a structured light environment that reveals the overall light return, light leakage, and contrast. This accurate image aligns with the diamond’s actual parametric measurements, facilitating further expert analysis of fundamental light behavior.

About IGI
The International Gemological Institute (IGI) has established its position as a global authority in diamond, gemstone, and jewelry grading. With 30 laboratories and 19 education facilities in major diamond and jewelry centers across the world, IGI has been providing the fine jewelry community and consumers with a wide range of services for nearly 50 years. This includes natural and laboratory-grown diamond reports, colored stone grading, and origin reports, as well as jewelry identification and appraisal reports.

My Conclusion
With he implementation of IGI’s new Light Performance Grading Reports, it  showcases a remarkable advancement in the assessment of round brilliant cut diamonds. This innovative system not only enhances traditional diamond grading but also empowers manufacturers to aim for the best possible results. The integration of scientific analysis and detailed light performance reports adds a new dimension to the understanding and appreciation of these precious stones. With IGI’s relentless dedication to providing detailed insights, the jewelry industry and consumers will be better equipped to make informed decisions regarding these remarkable gems.

AGS and CGAL are doing it, so its about TIME! 

Mark

For more information about this system and light performance cutting guidelines for diamond manufacturers, visit [IGI’s official website](https://www.igi.org/cut-grading).