The Radiant cut diamond is a unique, hybrid cut which comprises of 70 facets and has distinctive trimmed edges. Square-shaped Radiant cuts typically have ratios between 1.00 and 1.05 whilst rectangular cut Radiants can have ratios from anywhere between 1.05 and 1.50.
The Radiant cut’s versatile design combines the brilliance and depth of the round, Emerald and Princess cuts, which make it a popular choice for lots of different types of jewelery.
Since it’s a patented cut, it may also be referred to as a Cut-Cornered Square on a laboratory certificate (i.e. GIA or AGS), or a Rectangular Brilliant if it has a ratio greater than 1.05.
The Radiant cut was initially designed by Henry Grossbard of the Radiant Cut Diamond Company (RCDC) in 1977. Prior to this invention, diamonds with either a square or step-cut edges appeared less brilliant.
The brilliance was generated by Grossbard who invented a hybrid cutting style that revolutionized the industry’s perceptions towards square or rectangular stones by managing to create a step-cut diamond that possesses equal brilliance to triangular-faceted diamonds such as the oval and pear cut.
The Radiant cut is also the first cut to have a brilliant-facet pattern applied to both the crown & pavilion. The Original Radiant Cut diamond brand was launched by RCDC in 2002.