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No two marquise shape lab grown diamonds curve quite the same way. Some are cut with a fuller belly that tapers gently into each point, while others pull in tighter for a narrower, more knife-like silhouette. The difference sounds subtle on paper but changes the entire character of the stone once it’s set and catching light, particularly when compared side by side under the same lighting.
As a benchmark, a 0.22-carat, IGI-certified, Ideal cut, D color, VS1 clarity lab-grown marquise diamond is priced around $110. With D already sitting at the ceiling of the color scale, most of what moves the price around within this group comes down to carat size and clarity rather than color grade, so it’s worth weighing those two factors first.
Open facets mean an included marquise lab diamond has fewer places to hide flaws, so we’d suggest you lean toward VS1 clarity or above if you want a flawless look. Proportions matter just as much: cut it too shallow, and you risk a visible dark patch, known as a bowtie, running across the widest part of the stone and pulling focus from the rest of the sparkle. A well-balanced cut avoids that issue entirely, letting the brilliance read evenly from tip to tip.
Both tips of a marquise are exposed and thin, which makes the prong choice a genuine safety decision rather than just a styling one. V-shaped prongs cradle each point directly, while a double-claw setup spreads the pressure across more surface area for stones worn daily, reducing the odds of a chip over time. Either option can look sleek and modern depending on the rest of the setting.
Got something specific in mind? Tell us your preferred carat weight, clarity, or setting you’re after, send a photo for reference, and we at Loose Grown Diamond will create a marquise shape diamond to match and create the piece of your dreams.
D color represents the highest color grade, indicating a completely colorless diamond with exceptional purity and brilliance.
While more accessible than in natural diamonds, D color lab grown diamonds are still considered premium and less common.
Yes, D color enhances brilliance, especially in fancy shapes like marquise, where clarity and color show more.
Yes, lab grown diamonds are typically 30–50% more affordable than their natural counterparts.
Marquise diamonds have a vintage flair but are regaining popularity for their bold, elegant look.
Yes, the elongated shape makes them appear larger than round or square diamonds of the same carat weight.
