Welcome to Rêve Diamonds, your trusted GIA certified diamond dealer in London. We specialise in providing the finest wholesale diamonds, offering you unparalleled quality at unbeatable prices.
A 4 carat round cut lab-grown diamond is the most popular choice for engagement rings, prized for its 58-facet brilliance and timeless silhouette. Its symmetrical shape reflects light from every angle, giving it more sparkle than any other diamond shape — a favorite for those who want maximum fire without compromising on classic style. At 4 carats, this is a substantial, statement-size diamond.
Lab-grown diamonds are real diamonds created using either the High Pressure High Temperature (HPHT) or Chemical Vapor Deposition (CVD) method in a lab. These stones share the same physical, chemical, and visual properties as mined diamonds—only their origin differs. Even trained gemologists require special tools to tell them apart.
Choosing lab-grown means saving 30% to 50% over the cost of natural diamonds while making a sustainable and ethical choice.
All Rève Diamonds' lab-grown diamonds are independently certified, typically by IGI or GIA.
If you need assistance selecting your 4 Carat Round Cut Lab-Grown Diamond, contact us today:
New York: +1 (646) 898 2098
Los Angeles: +1 (310) 920 6656
Or chat with us now!
Prices typically range from $5,600 to $23,500, depending on specifications such as cut, color, and clarity.
A 4 carat diamond weighs around 0.8 grams (800 milligrams), no matter the shape.
Round cut diamonds are measured by diameter.
Diameter: 9.7mm – 11.0mm (average 10.3mm)
Depth: 5.9mm – 6.8mm (average 6.3mm)