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IGI grades the cut of fancy shaped diamonds on a scale ranging from Excellent to Poor, assessing polish, symmetry, proportions, and additional craftsmanship requirements in a four-step process. Polish and symmetry grading; Proportions qualification; Additional craftsmanship requirements; Light return grading; Click to see Process for Fancy ...
IGI's loose diamond reports identify natural or lab grown origin and document all aspects of the diamond's value-setting 4Cs. IGI Natural Diamond Reports give an accurate assessment of a diamond’s cut, color, clarity and carat weight according to strict international standards.
Cut Grading. IGI assesses craftsmanship components for all diamonds – with cut grading and optional light performance reports for round brilliant cuts – and a cut grading option for fancy shaped diamonds. Round Brilliant Cut Diamonds. IGI assesses all round brilliant cut diamonds in the areas of polish, symmetry, and proportions.
Fancy Shape Cut Grading: Diamonds are assessed using a four-step system combining polish and symmetry assessment with proportions qualifications, shape-specific requirements and light return grading. See a video overview of the Fancy Shape Cut Grading process
Diamond Grading. Following the diamond cutting process and prior to being sold loose or mounted into jewelry, diamonds are typically submitted to gemological institutions such as IGI for quality assessment. Four main factors are considered when judging a diamond’s quality and value.
Enter a round diamond’s table %, crown angle, and pavilion angle to see how it would be scored based on the GIA and AGS proportion based cut grading systems. The best cut diamonds will sit in the intersection between GIA Excellent and AGS Ideal.
How to analyze the IGI Diamond Report or Certificate? A diamond certificate or report has every small detail which is required to understand the diamond. These details will help the people who want to buy diamonds but for that they need to first understand the reports.
