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Looking To Buy a 3 Carat D IF 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 1 carat D IF lab-grown diamond represents the very top of the quality scale. D colour is the highest possible grade, offering a perfectly colourless appearance, while Internally Flawless clarity guarantees immaculate purity under magnification. It’s the ultimate choice for those seeking a luxury diamond with exceptional brilliance and prestige.
Lab-grown diamonds are genuine diamonds created in high-tech laboratories through either HPHT or CVD processes. They match mined diamonds in appearance, hardness, and sparkle — the only difference is how they are formed.
With savings of up to 50% compared with natural diamonds, choosing lab-grown allows you to invest in higher grades without exceeding budget.
Every diamond at RÊVE Diamonds comes with a recognised certification such as IGI or GIA, verifying its quality and authenticity.
Call us on 020 3585 2295 or chat with our expert team to find your perfect 1 carat D IF lab-grown diamond today.
D is the best colour grade — completely colourless. IF (Internally Flawless) means the diamond has no internal inclusions visible under 10x magnification. Together, they represent one of the most superior diamond combinations.
Prices typically range between £1,200 and £6,000 based on cut quality, fluorescence, and certification. D colour and IF clarity offer the highest level of rarity and therefore command a premium.
Absolutely — they offer a flawless visual appearance, superior sparkle, and unrivalled luxury. They are ideal for those wanting the finest specifications available.
Yes — a D IF diamond exhibits a brighter, more pristine look compared with lower colour and clarity grades, particularly when viewed under proper lighting.
A well-cut 1 carat round diamond typically measures around 6.4 mm in diameter. Physical size is influenced by cut proportions rather than clarity or colour.