Radiant Cut Diamond

A combination of the round brilliant cut and emerald cut led to the creation of the radiant cut diamond. The Radiant cut diamond is a blend of square or rectangular cut that has trimmed or angled corners. The radiant cut diamond is basically a cuboid shaped with 70 facets, 25 on the crown, 37 on the pavilion and 8 on the girdle. The facets are a combination of triangular and non-triangular. Due to the arrangement of the facet, the radiant cut displays a brilliance that can be said to be equivalent to the round brilliant cut diamond. It is the exceptional fire which makes the radiant cut diamond spectacular as a solitaire and equally amazing when paired with side stones. You have the option to choose either a square or a rectangle cut in a radiant cut category without even having to compromise on the quality.

Since the corners of a Radiant cut diamonds are angled and truncated, the stone is more durable and unlike the princess cut diamond is less prone to chipping. In a more rectangular radiant cut diamond, there are chances of a bow-tie effect that is usually varied from near invisible to severe. However, this bow tie effect is not as common or frequent as in other shapes like oval, pear and marquise. The bow-tie effect and its presence can only be determined upon visual examination and no diamond certificate issues such a report.

The ideal length-to-width ratio of Radiant cut diamonds of square shape is between 1 and 1.05 and for a more rectangular shape, the ideal length-to-width ratio is at or greater than 1.10. This is a mere recommendation and the preference may vary from person to person.

History of the Radiant Cut Diamond:

The credit for the creation of the first Radiant cut goes to Henry Grossbard, belonging to the Radiant Cut Diamond Company. It was in the year 1977. The previous square or step-cut edges were comparably less brilliant. Thanks to Grossbard’s invention of the hybrid style, people’s perception towards the square and rectangular shape underwent a sea change. The Radiant cut is apparently the first cut that comprises a pattern of brilliant-facet on both the crown and pavilion.

CUT GUIDE:

Following is the GIA evaluation of the cut of a radiant cut diamond. The GIA takes into consideration the below mentioned and several other factors while assessing a cut grade.


Excellent Very Good Good Fair Poor
Table % 61 - 69 57 - 60
or
70 - 72 
54 - 56
or
73 - 74
51 - 53
or
75 - 79
< 51
or
> 79
Depth % 61 - 67 59 - 60.9
or
67.1 - 70
57 - 58.9
or
70.1 - 74
54 - 56.9
or
74.1 - 79
< 54
or
> 79
Girdle Very Thin
to
Sl. Thick 
Very Thin
to
Sl. Thick
Very Thin
to
Thick 
Very Thin
to
Very Thick
Ex. Thin
to
Ex. Thick
Culet None
Very Small
Small
Medium 
> Medium

Color and Clarity

Assessing the color and clarity is considered crucial and hence, preferences vary from one person to another. While one person may wish for a flawless diamond, another may be just fine with slight inclusions included. 

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