Explore our collection of loose marquise cut lab grown diamonds which has remained a favourite for generations thanks to its distinctive, elongated shape and elegant pointed ends. Its proportions make it appear larger than many other diamond shapes of the same carat weight, while creating a graceful, finger-lengthening effect that never goes out of style.
Every loose marquise lab grown diamond in our collection has been personally assessed by our Hatton Garden specialists. We look beyond the grading report, examining each stone for the quality of its cut, the precision of its symmetry and the overall balance of the shape. The finest marquise diamonds have crisp, even points, smooth curves and a lively brilliance from end to end, and those are the standards we work to.
Whether you’re drawn to a bright, colourless D-grade diamond or prefer the softer character of the near-colourless grades through to J, you’ll find a carefully selected range of carat weights and qualities to choose from. Each diamond has been chosen for its beauty, balance and the confidence we’d have in recommending it ourselves.
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Meet with our jewellery designers to learn if a Marquise Cut diamond is the perfect match for your ring. Receive tailored advice and design options—Book an appointment today.
Flawless will help you at every step of your ring design process
Lab grown marquise cut diamonds combine the striking, elongated shape of the marquise with the sustainable advantages of modern technology. Their boat-like design creates a larger face-up appearance, giving maximum brilliance for the carat weight. Ethically created in controlled labs, these diamonds match mined stones in durability and sparkle while offering exceptional value. This makes them an ideal choice for eco-conscious buyers seeking both beauty and responsibility.
If you’d like to explore proportion details such as length-to-width ratio, table and depth percentage, you can switch over to our natural marquise cut diamonds page.
When choosing a marquise shaped lab grown diamond, pay close attention to symmetry, as uneven points can affect its overall look. Check for minimal “bow-tie effect” in the center, ensuring balanced brilliance across the stone. Consider the length-to-width ratio to match your style preference—whether a slender or wider shape. Always review the 4Cs with extra care on cut quality, as it defines sparkle and elegance in this unique shape
Whether you’re searching for a lab grown marquise diamond ring or a lab grown marquise cut engagement ring, our simple filters make it easy to compare stones and pick the perfect one for your jewellery piece.
Most buyers prefer a ratio between 1.75 and 2.25, but the best choice depends on whether you like a slender or wider shape.
Choose a well-cut stone with excellent symmetry and proportions, as this reduces the visibility of dark shadows in the center.
Popular choices include solitaire, halo, and east-west settings, which protect the pointed ends and highlight the diamond’s unique shape.