Lab Diamond Elongated Cushion Cut Engagement Rings

About This Shape

The elongated version differs from the standard square through its length to width ratio, typically between 1.15 and 1.30. This rectangular style combines soft rounded corners with an elegant stretched silhouette. The cut diamond features brilliant faceting that maximises light return and creates exceptional sparkle. It appeals to those who want something distinctive yet timeless.

Setting Styles

A solitaire style showcases the shape beautifully, with four prong or six prong settings being most popular. Halo designs add extra presence and can make the centre stone appear larger. Three stone arrangements with tapered baguettes create an Art Deco inspired look. The elongated cushion cut ring works well in both classic and contemporary mount styles, offering versatility for every taste.

Lab Grown Options

Our lab grown pieces offer the same optical properties as mined stones. Each cut diamond comes with independent certification confirming clarity, colour and carat weight. Choosing lab grown allows you to select a larger stone or higher grade within your budget. This option represents exceptional value without compromise on beauty.

Choosing Your Stone

Look for a length to width ratio that appeals to your eye. Some prefer a subtle stretch while others want a more pronounced rectangular style. Clarity of VS2 or above ensures a clean appearance. For colour, G or better works well in white metal settings. The elongated cushion cut diamond ring you choose should balance these factors against carat weight for the best overall appearance.

FAQs

What is the ideal ratio for this shape?
Most prefer a ratio between 1.15 and 1.25 for a balanced elongated look. Ratios above 1.30 create a more pronounced rectangular style. The ideal choice depends on personal preference and finger shape.

Does this shape look bigger?

Yes, the elongated style often appears larger than a square of the same carat weight due to its stretched shape. The rectangular silhouette also creates a flattering effect on the finger.

Is this shape good for engagement?

Absolutely. It combines romantic softness with an elegant silhouette. The style suits both vintage and modern aesthetics, making it a versatile choice for any taste.

Cushion Engagement Rings with Lab
Grown Diamonds

A cushion engagement ring offers a romantic alternative to round and oval cuts, with broad facets that produce a soft, pillowy sparkle. Our cushion cut lab grown
diamond collection features this distinctive shape in solitaire, halo and trilogy settings, each handcrafted in platinum or 18k gold. The elongated ring silhouette creates a flattering effect on the finger, and every cushion cut lab diamond ring in the range is independently certified for colour, clarity and carat weight.

2026 Award Nominations

Award Winning Jeweller

We’re proud to be recognised consistently by the UK jewellery industry’s leading awards programmes. In 2026, Lily Arkwright has been shortlisted for Branded Boutique of the Year at the Professional Jeweller Awards and Bridal Jewellery Retailer of the Year at the UK Jewellery Awards, reflecting our continued commitment to exceptional customer service, product innovation, and ethical craftsmanship.

These latest nominations build on previous industry recognition, including being shortlisted for Bridal Jewellery Retailer of the Year at the 2025 UK Jewellery Awards and Independent Retailer of the Year at the Professional Jeweller Awards 2025. We were also finalists for Retail Team of the Year at both the Retail Jeweller Awards and Professional Jeweller Awards in 2024, recognising the passion, expertise, and dedication of our team.

We’re honoured to be recognised for helping thousands of couples find the perfect engagement rings and wedding rings, with a strong focus on choice, transparency, and personalisation. As an award-winning jeweller, we remain committed to delivering exceptional service, exceptional craftsmanship, and responsibly sourced lab-grown diamonds, moissanite, and natural diamonds, ensuring every customer can find a ring that perfectly reflects their love story.

We are passionate about supporting good causes that make the world a better place

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