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.
A 3-carat oval cut diamond is an elegant and flattering choice for engagement rings or custom jewellery designs, offering brilliant sparkle with a contemporary twist. Its elongated shape enhances perceived size and adds a graceful, lengthening effect to the finger, blending modern beauty with timeless sophistication.
Lab-grown diamonds are genuine diamonds, created using state-of-the-art technology that mimics natural formation conditions. They are chemically, optically, and physically identical to mined diamonds—the only difference is their origin. Lab-created diamonds typically cost 30% to 50% less than natural ones, providing exceptional value without compromising quality.
At RÊVE Diamonds, each of our lab-grown diamonds is independently certified by respected organisations such as IGI or GIA, giving you full confidence in your purchase.
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat oval cut lab-grown diamond today.
Prices range from £2,500 to £20,000 depending on cut, colour, clarity, and overall craftsmanship.
A 3-carat diamond weighs around 0.6 grams, or 600 milligrams.
Oval diamonds are elongated with curved edges. Typical 3-carat size range:
Length: 11.5 mm – 14.0 mm (avg. 12.4 mm)
Width: 7.5 mm – 9.5 mm (avg. 8.5 mm)
Depth: 4.8 mm – 6.5 mm (avg. 5.7 mm)