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Rectangular Radiant Diamond Side Stones & Matching Diamond Pairs

We take great pride in our stock of Rectangular Radiant Cuts, so much so that we’ve added it to our unique product line of matching diamond pairs for use as side stones and diamond accents. We’re able to deliver exact matches due to being direct importers with manufacturing facilities. Our stock consists of:

OUR RECTANGULAR RADIANT CUT MATCHING DIAMOND PAIRS
RECTANGULAR RADIANT

The specification

OUR RECTANGULAR RADIANT CUT MATCHING DIAMOND PAIRS

Pair weight0.10 to 2.5 ct
ColorD to I
ClarityIF to SI1
Tolerance±0.05 mm

We supply calibrated Rectangular Radiant side stones, ready to set, across this range

Colors range from D to I

Rectangular Radiants are highly popular renditions of the Radiant Cut thanks to their superior fire and brilliance as well as their elongated aesthetically pleasing shape. They’re often incorporated into Radiant Diamond Cut Engagement Ring Designs, such as Three Stone Engagement Rings, Halo Rings, Pendants and Necklaces, among others.

We have yet to find a request that we couldn’t deliver on. Custom orders are available and are more than welcome. Feel free to contact us.

A Closer Look at Rectangular Radiant Cut Diamonds

THE HISTORY OF THE RADIANT CUT

The Radiant Diamond Cut was first introduced to the world by Henry Grossbard sometime during the 1970s and has seen remarkable growth in popularity ever since. Being a rare example of a hybrid that enjoys the best features of some of its ancestors, such as the sparkle and brilliance inherited by the Round Brilliant Cut, and the elongated elegance taken after the Emerald Cut.

Getting the Best Results From Your Radiant Cut

The Rectangular Radiant Cut features a rather large table and combined with its modified facet patterns offers a remarkable potential for retaining light and brilliance. It is only when the Radiant is handled by genuine experts at their craft where its potential comes to fruition. Numerous factors are to be considered and addressed in forming an ideal Rectangular Radiant Cut, such as the width to length ratio, the right color and clarity and much more. The Rectangular Radiant does indeed offer more potential in terms of its sparkle but has a great chance of having the unappealing bow-tie effect. Qualified and reliable direct importers and manufacturers can aid you in avoiding that possibility.

Ideal Settings for Rectangular Radiant Cut Diamonds

Due to the larger than the average number of facets the Radiant Cut features (around 70) it does a remarkably good job at hiding various imperfections such as blemishes and inclusions. It is also less delicate thanks to its bevelled corners, which opens up endless possibilities in terms of settings be Prone, Bazel, Chanel, Tiffany, and many more. Be it as a side stone or main stone the Radiant works brilliantly when combined with Trilliants, Baguettes, and Bullets among many other shapes creation a winning combination.

Frequently Asked Questions About Rectangular Radiant Side Stones

What is a rectangular radiant cut diamond?

A rectangular radiant is an elongated radiant: a rectangular brilliant with cropped, straight corners and full sparkle. It carries the outline of an emerald cut but is faceted for fire rather than steps. As a side stone the length gives a clean, modern line that follows an elongated center stone, while the cropped corners keep the edges crisp.

What is the difference between a rectangular radiant and a rectangular cushion?

Both are elongated, but a rectangular radiant has cropped, straight corners and a crisp, sharp edge, while a rectangular cushion has soft, rounded corners and a pillowy feel. The radiant reads as more modern and precise, the cushion as softer and more vintage. The corners are the quickest way to tell the two apart.

Which center stones do rectangular radiant side stones suit?

They pair well with elongated centers such as oval, emerald, and elongated cushion, where the length follows the center stone's line and the cropped corners sit cleanly against it. Because a rectangular radiant carries both a geometric outline and brilliant sparkle, it holds its own beside a bright center stone rather than sitting flat.

Why does the proportion of a rectangular radiant matter as a side stone?

Because it should echo the center stone. A rectangular radiant that sits too square beside a long center, or too long beside a squarer one, looks mismatched once set. Matching the length-to-width feel of the side stones to the center stone is what makes the three read as one design rather than three separate stones.

What is the difference between a rectangular radiant and an emerald cut?

They share the same cropped-corner, elongated outline, but they are cut differently. An emerald is a step cut with a calm, glassy surface, while a rectangular radiant is a brilliant with lively fire. Side by side they look like one shape behaving in two ways, one restrained and one sparkling. Buyers often confuse the two loose.

Search current availability or request sourcing

Since 1946 we’ve cut and matched diamond pairs and side stones for the trade — every pair aligned on cut, color, clarity and millimeter dimensions, ready to set. Search live availability for what’s in stock now, or send your specification and we’ll match it from inventory or cut it to order.