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 D colour diamond is the ultimate statement of purity and brilliance, perfect for engagement rings or standout jewellery. With no visible tint, its icy-white appearance offers unmatched sparkle, making it ideal for those seeking top-tier quality and timeless elegance.
Lab-grown diamonds are real diamonds, produced in high-tech labs that mimic natural geological processes. They are chemically and physically the same as mined diamonds but cost significantly less. With up to 50% savings, you can invest in a bigger or higher quality stone without sacrificing ethics or beauty.
At RÊVE Diamonds, every lab-grown diamond is independently graded and certified, typically by IGI or GIA—ensuring trust and transparency in every purchase.
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat D colour lab-grown diamond today.
Prices typically range from £3,000 to £22,000 depending on cut, clarity, and certification.
A 3-carat diamond weighs about 0.6 grams (600 milligrams).
D colour diamonds come in various shapes. Here's an example for a round 3-carat:
Diameter: 9.2 mm – 9.5 mm (avg. 9.3 mm)
Depth: 5.5 mm – 6.0 mm (avg. 5.8 mm)
Ratio and spread depend on the cut and proportions.