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Looking To Buy a 3 Carat G Colour Lab Grown Diamond?
Search through our inventory below or book a visit to our London Showroom.
Round
Princess
Cushion
Emerald
Pear
Oval
Marquise
Radiant
Asscher
Heart
European Cut
Old Miner
Rose
Briolette
Bullets
Calf
Flanders
Half Moon
Hexagonal
Kite
Lozenge
Octagonal
Pentagonal
Shield
Square
Star
Tapered Baguette
Baguette
Tapered Bullet
Trapezoid
Triangular
Trilliant
Other
A 3-carat G colour diamond is a refined choice for engagement rings or bespoke jewellery, offering near-colourless beauty and striking brilliance. With its subtle warmth and timeless glow, G colour provides excellent value and classic appeal, suitable for both traditional and modern designs.
Lab-grown diamonds are authentic gems, developed in laboratories using advanced methods that replicate the earth’s natural processes. They are optically, chemically, and physically the same as mined diamonds—only their origin differs.
Typically 30% to 50% less expensive than natural stones, lab-created diamonds offer outstanding value without compromising on quality, ethics, or aesthetics.
At RÊVE Diamonds, every lab-grown diamond is independently certified, primarily by IGI or GIA—ensuring trust and confidence with every purchase.
Call us on 020 3585 2295 or chat with our diamond experts to find your perfect 3 carat G colour lab-grown diamond today.
Prices range from £2,500 to £20,000 depending on cut, colour, clarity, and overall quality.
A 3-carat diamond weighs approximately 0.6 grams (600 milligrams).
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)