Radiant Diamonds


What is a Radiant Diamond?

Radiant diamonds blend the shape of an emerald with the facets of a brilliant cut.  The radiant is a relatively modern cut. Debuted in the late 1970s, master diamond cutter Henry Grossbard dreamed of uniting emerald and round brilliant cut diamonds. To do so, Grossbard invented an entirely new cutting technique, combining glittering, brilliant-cut facets with a geometric shape.

How Many Facets does a Radiant Diamond have?

What Makes a Radiant Diamond Special?

For such a new cut, the radiant is remarkably timeless. The clean lines and cut shoulders lend a little vintage polish, modernised with brilliant facets. The radiant is a versatile cut, as suited to a classic solitaire as a glittering halo. Whichever you choose, a radiant diamond exudes glamour. Radiants are available in a range of widths, from long and narrow rectangles to squares. Choose the ratio that pleases your eye, suits your design, or flatters your finger.

How do you Know if a Radiant Diamond is Well Cut?

First, we consider the visual impact of the stone - how do the fire, brightness, and scintillation appear? Second, the design - how well proportioned is the diamond? Finally, we look at the craftsmanship - how skillfully has the diamond been cut and polished? While radiant stones are not given a cut grading, there are some suggested parameters for a well-cut stone, including;

Length to width ratio: the length-to-width ratio of a diamond measures how proportional it is. Diamonds which fall within these parameters will be most pleasing to the eye, with a more distinct and even shape. As radiant diamonds are found in both square and long rectangle shapes, length-to-width ratios range from 1.00 to 1.50. An ideal ratio for a rectangular radiant cut diamond will be around 1.25, while square radiant cuts should fall between 1.00-1.05.

Table: the table is the largest, central facet of a stone. The table must be large enough to let lots of light into the diamond, but not so large that the upper facets don’t have room to sparkle. Look for a radiant diamond with a table ratio between 60 - 70%

Depth: a diamond’s depth is the top-to-bottom measurement of a diamond, from its table to culet. The depth ratio compares this measurement with the overall width of the stone. The depth affects the visual balance of a diamond and its brilliance. If a stone is too shallow or deep the light will not refract properly, escaping through the base of the diamond instead of the top. Look for a radiant diamond with a depth ratio between 60 - 70%.

Choosing a Diamond Cut Grade

diamond cut guide

Choosing a Radiant Diamond Colour

diamond colour guide

Choosing the Clarity of a Diamond

diamond clarity guide

Is a Radiant Cut the Diamond for You?

Why choose between geometric glamour and brilliant sparkle, when the radiant diamond delivers both? If you have a weakness for classic diamond sparkle, only a brilliant cut will do. But if you like standing out from the crowd, an under-the-radar radiant cut gets top marks for originality. Choose a solitaire engagement ring to ensure all attention is on your unusual diamond cut, or dress your radiant with a diamond halo for all-out glamour with a deco edge.