As one of Hatton Garden’s most established diamond specialists, we offer over 9,000 certified lab-grown cushion cut diamonds, with every stone verified for cut, colour, clarity and carat.
You’ll love the cushion cut for its square or rectangular shape with gently rounded corners and fewer, larger facets, a cut that trades sharp sparkle for broad, soft flashes of light. That same rounded, pillow-like silhouette is exactly where the name comes from and when you choose our cushion cut lab grown diamonds, you’re getting a stone that’s chemically, physically, and optically identical to a mined diamond, certified to the same 4Cs standard.
Our cushion cut lab diamond collection ranges from 1 to 10 carats, in colours from D to J and clarities from FL to SI1, with Excellent cut grades. This gives you a real choice, whether you want an everyday elegant stone or a statement centrepiece. Unlike online-only sellers, you can view and compare diamonds in person at our London or Manchester showrooms before you commit. Filter by your preferences, then use your chosen diamond as the first step in designing a fully bespoke engagement ring — selecting the setting and metal to match. If you need help choosing, our experts are here to guide you every step of the way.
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Book a private consultation to explore our handpicked lab grown cushion cut diamonds. From brilliance to setting styles, our experts will help you choose a sustainable, beautifully crafted diamond that reflects your vision.
Tailored Appointments with Our Diamond Specialists
Cushion shaped lab grown diamonds feature a square or rectangular outline with softly rounded corners, creating a balanced and elegant shape. Their larger facets enhance brilliance and fire, while advanced lab growing techniques ensure consistent quality and clarity. Available in both square and elongated ratios, they offer versatility for different jewellery designs. Each lab grown cushion cut diamond delivers the same sparkle and durability as mined diamonds, but with a sustainable and ethical origin.
With lab grown cushion cut diamonds, the ratio can be precisely crafted to suit your style. A ratio close to 1.00 offers a perfect square shape, while elongated ratios create a refined rectangular appearance. Thanks to advanced lab growing and cutting techniques, you can select from consistent proportions with optimal brilliance. Whether you prefer a modern square or a vintage-inspired elongated cushion, lab grown diamonds provide sustainable quality without compromise.
Absolutely. Cushion cut lab grown diamonds have the same brilliance and fire as natural diamonds, and with expert cutting, they can offer exceptional light performance.
Yes, lab grown cushion cuts are generally 30–40% less expensive than mined diamonds of the same quality, making them an ethical and budget-friendly choice.
Cushion cuts look beautiful in many designs, including solitaire, halo, and three-stone settings. They adapt well to both classic and modern styles.