3 Carat Round 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 Round Cut Lab-Grown Diamond
A 3-carat round cut diamond is a timeless and classic choice for engagement rings or standout jewellery, offering unmatched brilliance and fire. Known for its symmetrical shape and 58-facet pattern, the round cut maximises light reflection—perfect for those seeking a universally flattering and elegant diamond.
Why Choose a Lab-Grown Diamond?
Lab-grown diamonds are genuine diamonds created in a controlled lab using advanced methods that replicate natural geological conditions. Chemically and optically identical to mined diamonds, the only difference is their origin. Lab-grown options are typically 30% to 50% more affordable, offering outstanding value and ethical peace of mind.
At RÊVE Diamonds, each lab-grown diamond is independently certified by respected gemological institutes such as IGI or GIA, ensuring quality and authenticity.
Need Assistance?
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat round cut lab-grown diamond today.
Frequently Asked Questions
How much does a 3-carat round cut lab-grown diamond cost?
Prices range from £2,500 to £20,000 depending on cut, colour, clarity, and certification.
What does a 3-carat round cut lab-grown diamond weigh?
A 3-carat diamond weighs approximately 0.6 grams (600 milligrams).
What size is a 3-carat round cut lab-grown diamond?
Round cut diamonds are symmetrical. Here’s a typical size range:
Length: 9.1 mm – 9.6 mm (avg. 9.3 mm)
Width: 9.1 mm – 9.6 mm (avg. 9.3 mm)
Depth: 5.5 mm – 6.3 mm (avg. 5.9 mm)
