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About Round Diamonds part 2 : The Round Diamond Cut : GIA Cut Grading : Wholesale Diamonds in Dallas

by Richard Ribacoff
Round Diamonds in Dallas - Learn About Diamonds - Wholesale Diamonds - GIA Diamonds


In 2005, GIA introduced a cut-grading system for unmodified round brilliant cut diamonds. The name "unmodified round brilliant" was applied to a symmetrical round cut with a regular array of 58 facets, cut to modern standards. The system was the culmination of years of research that included the results of preference testing among a wide variety of groups, including trade professionals and consumers.

GIA designed the system to assess the design quality and craftsmanship of diamonds cut in the standard round brilliant style when compared to modern preferences. The system's grades are based on modern-day conventions and assess the proportions that yield the best combination of brightness, fire, scintillation, and pattern. There are five grades: Excellent, Very Good, Good, Fair, and Poor.

Round Diamonds - Cut Grading in Dallas - GIA Round Diamonds : Cut Grading in Texas : Shira Diamonds