Loose Diamonds

3 Carat E Colour 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.

Carat · 3.00 – 3.49 ct
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ct
Colour
Price · £100 – £1,400,000
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Cut grade only applies to Round diamonds.
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3 Carat E Colour Lab-Grown Diamond

A 3-carat E colour diamond offers near-colourless beauty with stunning brilliance, ideal for elegant engagement rings or luxurious jewellery. Its pristine whiteness and radiant sparkle ensure a timeless appeal, combining modern precision with classic style for an unforgettable statement piece.

Why Choose a Lab-Grown Diamond?

Lab-grown diamonds are real diamonds, cultivated using innovative technology that simulates natural geological conditions. They possess the same physical, chemical, and optical features as mined diamonds—only the origin is different.

Lab-created diamonds are often 30% to 50% more affordable than their natural counterparts, offering greater value without compromising beauty or ethics.

At RÊVE Diamonds, every lab-grown diamond is independently certified by leading institutions like IGI or GIA—ensuring you receive a genuine, high-quality gem.

Need Assistance?

Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat E colour lab-grown diamond today.

Frequently Asked Questions

How much does a 3-carat E colour lab-grown diamond cost?

Prices range from £2,500 to £20,000 depending on cut, colour, clarity, and overall quality.

What does a 3-carat E colour lab-grown diamond weigh?

A 3-carat diamond weighs approximately 0.6 grams (600 milligrams).

What size is a 3-carat E colour lab-grown diamond?

Asscher cut diamonds are typically square. Here’s a size range for a 3-carat Asscher diamond:

Length: 8.5 mm – 12.5 mm (avg. 9.8 mm)

Width: 8.3 mm – 11.2 mm (avg. 9.5 mm)

Depth: 4.9 mm – 7.5 mm (avg. 6.5 mm)

Explore Our Collections

3 Carat E Colour Lab-Grown Diamond | Rêve Diamonds