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4 Carat Round Cut Lab-Grown Diamond

Welcome to Rêve Diamonds, your trusted GIA certified diamond dealer in London. We specialise in providing the finest wholesale diamonds, offering you unparalleled quality at unbeatable prices.

Carat · 4.00 – 4.99 ct
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Price · £100 – £1,400,000
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Cut grade only applies to Round diamonds.
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4 Carat Round Cut Lab-Grown Diamond

A 4 carat round cut lab-grown diamond is the most requested choice for engagement rings, prized for its 58-facet brilliance and timeless silhouette. Its symmetrical shape reflects light from every angle, giving it the greatest sparkle of any diamond cut — a popular choice for those who want maximum fire without compromising on classic style. At 4 carats, this is a substantial, statement-size diamond.

Why Choose Lab-Grown Diamonds?

Lab-grown diamonds are real diamonds, produced in high-tech labs that replicate natural geological conditions. They match mined diamonds in chemical composition, physical properties, and optical brilliance — the only difference is how they're formed. Lab-grown diamonds offer excellent value, often costing 30% to 50% less than mined diamonds of the same quality.

At Rêve Diamonds, we offer a wide range of lab-grown diamonds that are certified by leading gemological institutes such as IGI or GIA, ensuring authenticity and quality with every purchase.

Need Assistance?

Call us on 020 3585 2395 or chat with our diamond experts to find your perfect 4 carat round cut lab-grown diamond today.

Frequently Asked Questions

How much does a 4 carat round cut lab-grown diamond cost?

Prices typically range from £5,040 to £21,300, depending on specifications such as cut, colour, and clarity.

What does a 4 carat round cut lab-grown diamond weigh?

A 4 carat diamond weighs around 0.8 grams (800 milligrams), regardless of shape.

What size is a 4 carat round cut lab-grown diamond?

Round cut diamonds are measured by diameter.

Diameter: 9.7mm – 11.0mm (average 10.3mm)

Depth: 5.9mm – 6.8mm (average 6.3mm)

Explore Our Collections

4 Carat Round Cut Lab-Grown Diamond | Rêve Diamonds