Radiant Cut Diamond Rings

Radiant Cut Diamond Rings for Women

A radiant cut has the clean, cropped-corner outline of an emerald cut and the lively sparkle of a round brilliant. Most of our radiant rings feature a lab-grown fancy color diamond in pink, yellow, blue or green, alongside natural and lab-grown white radiants, set in yellow, white or rose gold.

A Rectangle That Sparkles

Rectangular diamonds are usually step cut, with long parallel facets that give broad flashes of light. The radiant was designed in the 1970s to change that. It keeps the rectangular or square outline but covers the top and underside with brilliant-style facets, typically around 70 in total, so it throws back light the way a round does.

The result looks busy and bright, often described as "crushed ice": lots of small, scattered points of light rather than the bold flashes of an emerald cut. If you like the shape of an emerald cut but want more sparkle, the radiant is the shape to look at.

Why Radiants Suit Colored Diamonds

Light bounces around inside a radiant more than in most shapes before it leaves the stone. Every extra trip through the diamond deepens its color, which is why the radiant became the standard cut for fancy color diamonds. A pink or yellow radiant typically shows richer color than a round of the same grade.

That's the reason most of this collection is color. Our pink, yellow, blue and green radiants are lab-grown, and they come in sizes up to 3 carats, with larger stones available on request. Browse more colored lab diamond engagement rings, or see dedicated collections for pink diamond rings and yellow diamond rings.

Square or Rectangle

Radiants come in two outlines. A square radiant has a length-to-width ratio of about 1.00 to 1.05 and sits close to a princess cut in look, though with softer, clipped corners. A rectangular radiant is usually between about 1.20 and 1.35 and looks longer on the finger.

For size: a 1 carat rectangular radiant measures roughly 6.5 × 5.0 mm, and a square one about 5.5 mm per side. At 2 carats, expect about 8.0 × 6.3 mm for a rectangle, and at 3 carats about 9.0 × 7.2 mm. Radiants are cut fairly deep, so they face up a little smaller than an oval of the same weight.

Forgiving on Clarity, Watch the Corners

All that faceting hides small inclusions well, much better than an emerald cut does, so a radiant is a shape where you can usually step down a clarity grade without seeing a difference. Color is the opposite in a white radiant: tint gathers in the corners, so choose a slightly higher color grade if you want an icy look in white gold.

The clipped corners also help durability. A square or princess cut has sharp points that can chip, while a radiant's trimmed corners are much less exposed.

Our Radiant Designs

The collection currently has two engagement ring designs, each made in every color:

• Halo with pavé band. A ring of small diamonds follows the radiant's outline and makes the center look larger, with more diamonds set along the band. See other halo engagement rings.
• Solitaire with pavé band. A single radiant held by prongs at its four corners, above a band lined with small diamonds. Our pavé engagement ring guide explains how pavé is set and cared for.

Everyday radiant rings are being added to this collection. For the engagement designs only, see radiant cut engagement rings, and our radiant engagement ring buying guide covers choosing a stone in more depth.

Natural, Lab-Grown and Certificates

Natural radiants go up to 1 carat. A natural diamond of 0.50 carat or more includes an IGI or GIA report, and smaller natural stones come without documentation.

White lab-grown radiants and lab-grown fancy colors go up to 3 carats, with bigger stones made on request. A lab-grown diamond of 1 carat or more includes an IGI report, and smaller lab-grown stones aren't individually certified.

Rings priced above $800 also come with a third-party jewelry certificate from GSI. Compare both origins in natural diamond rings and lab-grown diamond rings.

Shipping

US orders ship free, and we also ship to many countries outside the US. Rates, timelines and destinations are on our shipping policy page.