The most talked-about engagement ring of the year is not a round or an oval. It is a cushion cut diamond, the softly squared shape Travis Kelce chose for Taylor Swift and Tom Holland chose for Zendaya, and the cut quietly rewriting what modern brides want.

A cushion cut diamond reads as heritage and modern at once: rounded corners, a pillow-like outline, and open facets that glow rather than sparkle-storm. If you are shopping in 2026, this guide covers what the shape actually is, how it compares to round and oval, the length-to-width ratio to look for, and why lab-grown makes it the smartest value in fine jewelry right now. Every stone Roomy's sets is lab-grown, IGI and Roomy's certified, and cut in solid 10, 14 or 18kt gold.

What Is a Cushion Cut Diamond?

A cushion cut diamond is a square or rectangular stone with rounded corners and large, open facets, a silhouette that trades a little of the round brilliant's fire for a softer, candlelit glow. The shape dates to the 1800s old mine cut, which is why it feels antique and current at the same time. According to National Jeweler's read of The Knot's 2026 Real Weddings study, cushion and radiant cuts each account for about 6 percent of new engagement rings, and the elongated cushion is one of the three fastest-growing shapes of the past year.

It helps to know the two families before you shop:

• Classic cushion: close to square, roughly a 1.00 to 1.05 ratio, the most vintage and romantic look.
• Elongated cushion: stretched to a 1.10 to 1.35 ratio, so it lengthens the finger and reads larger than its carat weight.
• Crushed-ice vs chunky: crushed-ice cushions scatter light into a shimmery mosaic, while chunky (or antique) faceting gives broad, bold flashes.

Cushion Cut vs Round, Oval and Emerald

A cushion cut diamond sits between the fire of a round and the calm of an emerald cut, which is exactly why it flatters so many hands. The round brilliant is still the most popular shape at 26 percent of rings and the oval close behind at 25 percent, per The Knot's 2026 study, but neither offers the cushion's soft-cornered warmth. Use this quick comparison as you narrow your shortlist.

For a deeper look at every silhouette, our 2026 diamond cut guide walks through all five shapes side by side, and the carat size chart shows how a cushion measures up face-up.

How to Choose a Cushion Cut Diamond

Choosing a cushion cut diamond comes down to four levers: ratio, clarity, color and setting. Because the facets are open and generous, a cushion is more forgiving of tiny inclusions than a step-cut emerald, which lets you put your budget where it shows.

• Ratio: decide square (1.00-1.05) or elongated (1.20-1.30) first, since it changes the entire personality of the ring.
• Clarity: aim for an eye-clean SI1, the open facets hide small inclusions that an emerald cut would reveal.
• Color: H or better keeps the stone bright in white gold; in yellow gold you can drop to I or J and save.
• Setting: a halo exaggerates size, a bezel protects the corners, and a plain solitaire lets the cushion speak for itself.

Cushion Cut Settings and Companions from Roomy's

Roomy's does not chase novelty for its own sake: it builds solid gold, IGI and Roomy's certified settings that hold a cushion beautifully and pair with it for years. The Reverie Diamond Sculptural Ring (from $1,050) echoes a cushion's soft, rounded geometry, while the Linear Diamond Half Eternity Band (from $700) is the clean companion band most cushion engagement rings ask for.

Prefer more sparkle alongside the center stone? The Prism Emerald Eternity Band (from $1,050) adds step-cut structure, and the Marquise Eternity Diamond Band (from $1,900) brings over two carats of pointed light. To echo the cushion's look at the neckline, the Halo Round Diamond Pendant (from $850) shows how a halo frames a single stone. Once your ring is chosen, it is worth reading up on the season's biggest styling shift in our mixing metals guide, since a cushion looks just as good in a two-tone stack.

Frequently Asked Questions