Radiant Cut Diamonds
Square or Rectangular Cut Cornered Modified Brilliant
Radiant cuts are square or rectangular mixed cuts with angled corners. Henry Grossbard patented the Radiant cut in the late 1970s, as a brilliant alternative to the Emerald cut. Radiant cuts are often utilized to maximize color in fancy colored diamonds. The nature of this cut aids in the concentration of color, and will sometimes push a light yellow diamond in the S-Z range into the fancy yellow category. Radiants are categorized as Cut Cornered Modified Brilliant cuts by major diamond grading labs.
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Special Characteristics of Radiant Cut Diamonds
Because of the angled corners, Radiant cuts lack the setting issues of sharply cornered Princess cuts, which require extra care.
Like Princess cuts, Radiant cuts generally look smaller from the “face up” position than other diamond shapes of the same weight as a result of their different design.
Basic Radiant Cut Guidelines courtesy of http://datlas.com/AGA_NAJA_Cut_Class_grader/index.php
International fine trade cut
US domestic average cut
Crown Height %
V. Thin to Sl. Thick
V.Thin to Thick(0.4%-5.5%)
Very Thin to Very Thick
Extremely thin to
Total Depth %
> Class 3 < Class 3
Courtesy of D.S. Atlas, Accredited Gem Appraisers, © AGA 1998-2004
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