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  • https://www.revediamonds.com/us/3-carat-marquise-cut-lab-grown-diamonds

3 Carat Marquise Cut Lab Grown Diamonds

Select a 3ct Marquise cut lab grown diamond from the thousands of certified lab diamonds in our collection.
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Call NY today: +1 (646) 898 2098 Call LA today: +1 (310) 920 6656

Looking To Buy a 3 Carat Marquise Cut Lab Grown Diamond?

Search through our inventory below or book a visit to our New York or Los Angeles showrooms.

Lab Grown Diamonds
Coloured Diamonds

  • Round Round

  • Princess Princess

  • Cushion Cushion

  • Emerald Emerald

  • Pear Pear

  • Oval Oval

  • Marquise Marquise

  • Radiant Radiant

  • Asscher Asscher

  • Heart Heart

  • European Cut European Cut

  • Old Miner Old Miner

  • Rose Rose

  • Briolette Briolette

  • Bullets Bullets

  • Calf Calf

  • Flanders Flanders

  • Half Moon Half Moon

  • Hexagonal Hexagonal

  • Kite Kite

  • Lozenge Lozenge

  • Octagonal Octagonal

  • Pentagonal Pentagonal

  • Shield Shield

  • Square Square

  • Star Star

  • Tapered Baguette Tapered Baguette

  • Baguette Baguette

  • Tapered Bullet Tapered Bullet

  • Trapezoid Trapezoid

  • Triangular Triangular

  • Trilliant Trilliant

  • Other

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3 Carat Marquise Cut Lab-Grown Diamond

Make a graceful and eye-catching statement with a 3 carat marquise cut lab-grown diamond. Known for its elongated, pointed shape and elegant curves, the marquise cut enhances brilliance while creating the illusion of a longer, slimmer finger—perfect for distinctive engagement rings and bespoke jewelry designs.

What Is a Lab-Grown Diamond?

Lab-grown diamonds are authentic diamonds created under controlled conditions using either High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD). They are chemically, visually, and structurally identical to natural diamonds—so much so that expert gemologists use advanced tools to distinguish them.

Choosing lab-grown means you’ll save 30% to 50% compared to mined diamonds, while also making a sustainable and ethical purchase.

All lab-grown diamonds from RÊVE Diamonds are independently certified, most frequently by IGI or GIA, ensuring full quality assurance and confidence.

If you need assistance selecting your 3 Carat Marquise Cut Lab-Grown Diamond, contact us today:

New York: +1 (646) 898 2098

Los Angeles: +1 (310) 920 6656

Or chat with us now!

Frequently Asked Questions

-How much does a 3 carat marquise cut lab-grown diamond cost?

Prices range from $3,000 to $25,000 depending on the 4 Cs—cut, color, clarity, and carat.

-How much does a 3 carat marquise cut diamond weigh?

It weighs approximately 0.6 grams or 600 milligrams.

-How large is a 3 carat marquise cut diamond?

Typical size dimensions include:

Length: 13.0 mm – 15.5 mm (avg. 14.3 mm)

Width: 6.5 mm – 8.5 mm (avg. 7.5 mm)

Depth: 4.2 mm – 6.0 mm (avg. 5.2 mm)