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Marquise Cut Lab Grown Diamonds

Shop our collection of marquise cut lab grown diamonds, one of the most sought-after diamond shapes for modern engagement rings. Known for its distinctive elongated shape and pointed ends, the marquise cut creates a striking, eye-catching look while maximizing perceived size. As more couples look beyond traditional round diamonds, marquise lab grown diamonds have surged in popularity thanks to their unique appearance, flattering finger coverage, and contemporary yet timeless appeal.

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Price
Many factors impact diamond price. With Ritani's Diamond Price Match Guarantee you can be confident you'll get the best price for a diamond. Tip: Tradition tells you to budget 2-3 months' salary for your ring. We say, just do you.
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Carat
Carat is the measure of a diamond's weight and size. We offer an array of high-quality diamonds ranging from 0.18 to 25.00 carats- with 1.00 carat being the most popular.
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Color
A diamond’s color grade actually measures how little color it reflects. To strike the best balance between cost and beauty, go for diamonds in the Near Colorless range: G, H, and I.
Clarity
Clarity indicates how many flaws are visible to the naked eye. Too many flaws can detract from a diamond's beauty.
Cut
Cut is the quality of a diamond’s proportions and symmetry. The better a diamond’s proportions and symmetry, the more sparkle it will produce. Cut is the most important of the 4 Cs.
Polish
A well-polished diamond will have excellent light return.
Fluorescence
Some diamonds glow blue or green when exposed to UV light. Since fluorescence is rarely visible, it has minimal impact on the appearance of your diamond. To save money, go for medium fluorescence.
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Depth %
Depth percentage correlates with a diamond's sparkle factor. It is measured by dividing the diamond height by its diameter. For maximum sparkle, the depth percentage of a round diamond should be between 54% and 66%.
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Length/Width Ratio
The proportional relationship between your diamond’s length and width. A perfect round diamond would measure equally 1-to-1, so its LxW ratio would measure as 1.
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Symmetry
Symmetry tells you how well a diamond’s facets align to create sparkle. Diamonds with perfect symmetry create the most sparkle and earn a grade of Excellent or Ideal.
Table
Table percentage tells you how big a diamond’s topmost facet (aka table) is in comparison to its diameter (aka girdle). When that ratio is in the right range, a diamond will sparkle more.
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Culet
The culet is the point at the bottom of the diamond. If the point has a facet on it, it can stop light from reflecting and detract from the diamond's sparkle. Choose a diamond with no culet for optimum sparkle.
Certificate
All of Ritani’s natural diamonds are certified by either the GIA or AGSL, the industry’s two most respected grading labs.
Lab Diamond Growth Process

Lab diamonds are made using two processes, HPHT and CVD. Both mimic the natural process of earth diamonds. LEARN ABOUT LAB DIAMONDS

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0.21 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.21 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.20 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.23 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS1 Clarity - IGI Certified
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0.22 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.27 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.28 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.32 Carat Good Cut Marquise Lab-Grown Diamond - F Color, SI1 Clarity - IGI Certified
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0.29 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.26 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS1 Clarity - IGI Certified
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0.26 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS1 Clarity - IGI Certified
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0.28 Carat Good Cut Marquise Lab-Grown Diamond - F Color, VVS2 Clarity - IGI Certified
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0.27 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.27 Carat Good Cut Marquise Lab-Grown Diamond - E Color, VVS2 Clarity - IGI Certified
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0.29 Carat Good Cut Marquise Lab-Grown Diamond - E Color, VS1 Clarity - IGI Certified
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0.32 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VS1 Clarity - IGI Certified
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0.30 Carat Very Good Cut Marquise Lab-Grown Diamond - E Color, VS2 Clarity - IGI Certified
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0.29 Carat Good Cut Marquise Lab-Grown Diamond - D Color, VS2 Clarity - IGI Certified
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0.27 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS1 Clarity - IGI Certified
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0.28 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.28 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.32 Carat Very Good Cut Marquise Lab-Grown Diamond - E Color, SI2 Clarity - IGI Certified
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0.27 Carat Very Good Cut Marquise Lab-Grown Diamond - D Color, VVS2 Clarity - IGI Certified
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0.30 Carat Very Good Cut Marquise Lab-Grown Diamond - E Color, VS1 Clarity - IGI Certified
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Shop our collection of marquise cut lab grown diamonds, one of the most sought-after diamond shapes for modern engagement rings. Known for its distinctive elongated shape and pointed ends, the marquise cut creates a striking, eye-catching look while maximizing perceived size. As more couples look beyond traditional round diamonds, marquise lab grown diamonds have surged in popularity thanks to their unique appearance, flattering finger coverage, and contemporary yet timeless appeal.

Why Marquise Cut Lab Grown Diamonds Are Growing in Popularity

Marquise cut lab grown diamonds have quickly become a favorite among shoppers seeking a unique alternative to more traditional diamond shapes. Defined by their elongated silhouette and elegant pointed ends, marquise diamonds offer a bold look that stands out while maintaining a refined, sophisticated feel. Their distinctive shape creates an engagement ring that feels both modern and timeless, making them an increasingly popular choice for today's couples.

One of the biggest advantages of a marquise cut diamond is its ability to appear larger than many other diamond shapes of the same carat weight. The elongated design maximizes surface area, creating impressive visual presence and making fingers appear longer and more slender. For shoppers looking to maximize size without increasing carat weight, marquise diamonds offer exceptional value.

Lab grown marquise diamonds provide all the beauty, brilliance, and durability of mined diamonds while allowing shoppers to choose larger sizes or higher quality specifications within their budget. Whether set in a classic solitaire, hidden halo, three-stone design, or a modern east-west setting, a marquise diamond creates a memorable centerpiece that attracts attention from every angle.

Browse our collection of marquise cut lab grown diamonds to discover a shape that combines individuality, elegance, and contemporary style. With transparent pricing and a wide range of carat weights and quality grades, finding the perfect marquise diamond for your engagement ring has never been easier.

If you need help selecting your marquise-cut lab-grown diamond, contact us at Contact Phone number 1-888-9RITANI or chat now!

Common Questions

Frequently Asked Questions

A marquise-cut lab-grown diamond can cost anywhere between $240 and $18,000 depending on the 4 cs. The median price for a lab-grown marquise-cut diamond is $1,500.

​A marquise cut lab-grown diamond features an elongated shape with pointed ends, resembling the hull of a boat. This cut is known for its ability to maximize carat weight, making the diamond appear larger than other shapes of the same weight. Lab-grown marquise diamonds are created in controlled environments, replicating the natural conditions under which diamonds develop, offering both beauty and sustainability.

When selecting a marquise cut lab-grown diamond, consider the 4 Cs: Cut, Color, Clarity, and Carat. The symmetry of the cut is crucial; both ends should align perfectly, and the sides should be symmetrical. The length-to-width ratio is also important for aesthetic appeal, with a classic marquise ratio being between 1.85 and 2.10.

The marquise cut is renowned for its ability to elongate the finger of the wearer, offering an elegant and sophisticated appearance. Its unique shape also maximizes the perceived size of the diamond, providing a larger surface area compared to other cuts of the same carat weight. This shape has a rich history and is often associated with royalty and luxury.


Marquise cut diamonds are versatile and can be set in a variety of ring settings. However, due to their pointed ends, it's advisable to choose a setting that protects these vulnerable areas from chipping or damage. Settings with V-shaped prongs at the ends are ideal. Bezel settings or halo settings can also provide additional protection and enhance the diamond's appearance.


Caring for a marquise cut lab-grown diamond involves regular cleaning with a soft brush and mild soap solution to maintain its brilliance. It's also recommended to have it inspected by a professional jeweler periodically to ensure the security of the setting. Avoid exposing the diamond to harsh chemicals or physical impacts that could damage it.

Absolutely! Marquise cut lab-grown diamonds are an excellent choice for custom jewelry designs due to their distinctive shape and impressive appearance. For example, 3-carat marquise diamond rings can be accented by smaller stones along the sides to enhance its brilliance even more. Whether you're considering a marquise engagement ring, a pendant, or earrings, a marquise-cut diamond can add a touch of elegance and uniqueness to your custom piece.