3 Carat Cushion 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 Cushion Cut Lab-Grown Diamond
A 3-carat cushion cut diamond is a romantic and timeless option for engagement rings or showpiece jewellery. Blending a square or rectangular shape with softly rounded corners, this classic cut features large facets that enhance brilliance and give the stone a warm, glowing sparkle—ideal for vintage-inspired or contemporary designs.
Why Choose a Lab-Grown Diamond?
Lab-grown diamonds are genuine diamonds, formed in a laboratory using advanced methods that replicate natural geological processes. They are chemically, physically, and visually identical to mined diamonds, with the added benefit of ethical sourcing. On average, lab-grown diamonds are 30% to 50% more affordable, allowing you to achieve exceptional quality and value.
At RÊVE Diamonds, all of our lab-grown diamonds are independently certified by trusted gemological labs such as IGI or GIA.
Need Assistance?
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat cushion cut lab-grown diamond today.
Frequently Asked Questions
How much does a 3-carat cushion cut lab-grown diamond cost?
Prices range from £2,500 to £20,000 based on cut, colour, clarity, and certification.
What does a 3-carat cushion cut lab-grown diamond weigh?
A 3-carat diamond weighs approximately 0.6 grams (600 milligrams).
What size is a 3-carat cushion cut lab-grown diamond?
Cushion cut diamonds vary in shape. Size range:
Length: 8.8 mm – 10.5 mm (avg. 9.5 mm)
Width: 8.6 mm – 10.3 mm (avg. 9.3 mm)
Depth: 5.0 mm – 6.8 mm (avg. 6.0 mm)
