Elongated Cushion Cut Lab-Grown Diamond Engagement Rings

The elongated cushion cut takes everything that makes the traditional cushion shape appealing - its soft rounded corners, its depth of light, its warmth, and stretches it into a rectangular silhouette that flatters the hand in an entirely different way. Where a standard cushion sits compactly on the finger, the elongated version creates a more contemporary, streamlined profile with a greater sense of presence.

At The Jewel Concierge, every elongated cushion cut lab grown diamond engagement ring is crafted to order in your choice of 14k or 18k yellow gold, white gold, rose gold, or platinum. Each ring begins with a certified lab grown diamond, selected for exceptional cut, colour, and clarity — then set into a design that complements the shape's modern proportions.

The elongated cushion's stretched profile makes it a natural fit for those drawn to shapes like the oval or radiant but who prefer the softness that rounded corners bring. Its facet pattern produces broad, luminous flashes of light — a quality that gives the stone warmth and visual depth rather than fine-point sparkle. It is a shape that feels both current and considered.

Our elongated cushion range includes solitaire, halo, cathedral, and bezel settings, among others. If you prefer a more compact, square proportion, explore our traditional cushion cut collection.

Every piece arrives with a lifetime warranty, complimentary ring resizing, complimentary engraving, and complimentary express insured shipping. If you would like guidance choosing the right elongated cushion diamond or setting, our team is here — book a virtual consultation or begin your bespoke journey to design something entirely your own.

Explore our full range of lab grown diamond engagement rings or read our guide to engagement ring styles.

Frequently Asked Questions

What is the difference between an elongated cushion cut and a traditional cushion cut?

The traditional cushion cut has a near-square length-to-width ratio, giving it a compact, centred appearance. The elongated cushion stretches that silhouette into a rectangular profile — typically with a ratio of around 1.2:1 or higher. Both share the same soft rounded corners and broad facet pattern, but the elongated version creates a more finger-flattering, contemporary look.

How does an elongated cushion compare to an oval or radiant cut?

All three shapes share an elongated profile that flatters the finger, but they differ in character. The oval has smooth, curved edges and brilliant-cut sparkle. The radiant has cropped corners and intense brilliance. The elongated cushion sits between the two — its rounded corners give it a softer feel than the radiant, while its broader facets produce a warmer, deeper light pattern than the oval.

What settings are available for elongated cushion engagement rings at The Jewel Concierge?

Our elongated cushion engagement rings are available in solitaire, halo, cathedral, and bezel settings, among others. You can also choose from a range of intricate design elements to further customise your ring — such as adding a hidden halo, a pavé bridge, a pavé band, and more. Each ring is crafted to order in 14k or 18k yellow gold, white gold, rose gold, or platinum.

Can I design a custom elongated cushion engagement ring?

Absolutely. Our Bespoke Journey begins with a conversation — we take the time to understand your vision, preferences, and priorities, whether you have a clear idea or are still exploring. From there, we refine the design direction together and help you select a diamond that suits your brief. Once the design is finalised, we create a detailed CAD model for you to review and approve before crafting begins. The entire process typically takes six to eight weeks from design approval, at no additional cost. You can start by filling out our Bespoke Journey order form.