3 Carat Marquise Cut Lab Grown Diamonds
Are you looking to buy a lab-grown loose diamond or engagement ring? Select from the thousands of certified diamonds in our collection. Lab-grown diamonds are chemically, physically, and optically identical to mined diamonds — available at 50–70% less than the cost of a naturally mined stone.
3 Carat Marquise Cut Lab-Grown Diamond
A 3-carat marquise cut diamond is a striking option for engagement rings or elegant jewellery pieces, offering a unique silhouette and impressive sparkle. Its elongated shape with pointed ends creates a flattering, finger-lengthening effect, blending regal sophistication with contemporary appeal.
Why Choose a Lab-Grown Diamond?
Lab-grown diamonds are authentic diamonds produced in laboratories using cutting-edge technology that mimics the Earth’s natural processes. They are chemically, physically, and visually identical to mined diamonds—differing only in origin. Lab-created diamonds are usually 30% to 50% less expensive than natural stones, giving you greater value without compromising on brilliance or beauty.
At RÊVE Diamonds, all of our lab-grown diamonds are independently certified by renowned institutions such as IGI or GIA, ensuring quality and transparency with every purchase.
Need Assistance?
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat Marquise cut lab-grown diamond today.
Frequently Asked Questions
How much does a 3-carat marquise cut lab-grown diamond cost?
Prices range from £2,500 to £20,000 depending on cut, colour, clarity, and craftsmanship.
What does a 3-carat marquise cut lab-grown diamond weigh?
A 3-carat diamond weighs approximately 0.6 grams or 600 milligrams.
What size is a 3-carat marquise cut lab-grown diamond?
Marquise diamonds are elongated with tapered tips. Typical size range:
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)
